2. Who was the first to clearly define the idea of
a species?
Abeka Science 7th G

Answers

Answer 1

The most famous definition of a species comes from the 20th century German-born biologist Ernst Mayr, who emphasised the importance of interbreeding.


Related Questions


What do waves transfer?
O matter
O energy
O water
particles

Answers

Answer:

Energy

Explanation:

In electromagnetic waves, energy is transferred through vibrations of electric and magnetic fields. In sound waves, energy is transferred through vibration of air particles or particles of a solid through which the sound travels.

Answer:

energy

Explanation:

Wave' is a common term for a number of different ways in which energy is transferred: In electromagnetic waves, energy is transferred through vibrations of electric and magnetic fields. In sound waves, energy is transferred through vibration of air particles or particles of a solid through which the sound travels

ANSWER FOR 44 POINTS!!!! Also please answer it like don’t just put random stuff I actually need help here <3


1. A unit used to measure energy is the kcal.

a. What is the source of all
energy in the pyramid?

b. How much energy does this source provide to a square meter of the Earth per year? (Be sure your
answer includes units.)

2. The arrows represent the energy available to the next level of the pyramid.

a. What percentage of the source energy form question 1 is absorbed by the oak leaves? Divide oak levar got by the total sunlight hitting the earth’s surface.

b. By what process do the oak leaves harness this energy?

3. Describe how the consumers in one level of the pyramid obtain energy from the organisms at the previous level of the pyramid.

a. How much energy per year do caterpillars obtain from eating the leaves in a square meter of the oak tree?

b. What percentages the energy that was originally by the oak leaves is passed in to the caterpillars? Divide ye hat the caterpillars got by wag at leaves got.

c. What percentage of the energy absorbed by the oak leaves is not passed on to the caterpillars?

4. Calculate the percentage of the nervy that is transferred from one level of the pyramid to another for all of the levels?

a. Oak leaves to caterpillars (see question 3b)

b. Caterpillars to blue jays.

c. Blue jays to hawk.

5. Calculate the average percentage of energy that is transferred from one level to another using you answers in question 5. Note that this average percentage transfer is similar for many different types of energy pyramid in nature.

6. Explain why an energy pyramid in any ecosystem typically is limited to four or five levels only.

Answers

Answer:

If you use this link it gives you most of the answers, if you want I can try to find another link to help with the rest of the questions if you want me to

Explanation:

https://quizlet.com/_30xwac?x=1jqt&i=1ilexf

Answer:

What is the source of all energy in the pyramid in Model 1

Sunlight hitting the earth's surface

How much energy does this source provide to a square meter of the Earth per year? (be sure your answer includes units)

3,190,000 kcals

Label the pyramid levels in Model 1 with the following: primary producers, primary consumers, secondary consumers, and tertiary consumers

Oak tree leaves are the primary producers

Caterpillars are the primary consumers

Blue Jays are the secondary consumers

Hawks are the tertiary consumers

What percentage of the source energy from question 1a is absorbed by the oak leaves in Model 1?

8 %

By what process do the oak leaves harness this energy?

photosynthesis

Describe how the consumers in one level of the pyramid obtain energy from the organisms at the previous level of the pyramid

By consuming them

How much energy per year do the caterpillars in Model 1 obtain from eating the leaves in a square meter of the oak tree?

4,000 kcal

What percentage of the energy that was originally absorbed by the oak tree leaves is passed on to the caterpillars

13.5%

What percentage of the energy absorbed by the oak leaves is not passed on to the caterpillars

84.3%

With your group, list at least three possible uses and/or products of the energy absorbed by the oak leaves that did not contribute to the production of biomass.

Photosynthesis, heat, leaves changing colors

PLSSS HELP, the question is what does this represent.

Answers

Answer:

metaphase

Explanation:

The hierarchy of traits is a structured progression of personality that begins with a few higher-order traits that result in several lower-order traits, determining a person's response in a specific situation. True or False? ​

Answers

Answer:true

Explanation:

Answer:true!

Explanation:

Which term describes the energy of molecules in motion?


thermal energy


atomic energy


material energy


molecular energy

Answers

Answer:

I'm thinking molecular energy.

Explanation:

just because you know, molecules, molecular... that's all I got I'm afraid :(

Give an example, from any biome, of how two types of organisms may interact with each other in the following ways:
predator/ prey

Answers

Answer:

Summary. Species interactions within ecological webs include four main types of two-way interactions: mutualism, commensalism, competition, and predation (which includes herbivory and parasitism). Because of the many linkages among species within a food web, changes to one species can have far-reaching effects.

Explanation:

why is oxygen important in aerobic respiration

Answers

Answer:

Oxygen is the final electron acceptor at the end of the electron transport chain of aerobic respiration. In the absence of oxygen, only a few ATP are produced from glucose. In the presence of oxygen, many more ATP are made.

Answer:

Oxygen is the final electron acceptor therefor its very important

Explanation:

The final stage of aerobic respiration which involves oxygen makes the most ATP since i believe it makes 32 ATP. Therefor its very important

Experiments on Osmosis are often carried out using potato
cylinders. You have been asked to find out if sweet potato or bread
fruit would be a good alternative​

Answers

Ask you teacher honey

The osmosis process is based on solute concentration, if sweet potato or breadfruit has more amount of sucrose changing the osmolarity, hence not used for osmosis.

What is osmosis?

When a potato is placed in salt water, all the water inside it, plants have a lot of water inside them, that's what gives a plant its structure travels out by osmosis because water will move from an area of less salt to more salt (more water to less water).

The cells that makeup potatoes have cell walls that function as semipermeable membranes. In comparison to the fluid inside the potato cells, the saltwater solution is hypotonic, meaning that it has more water and fewer salts.

This is because a sweet potato has more sugar than a regular potato, changing the osmolarity conditions during osmosis.

Therefore osmolarity condition is more important during osmosis, hence sweet potato or breadfruit would not be a good alternative.

Learn more about osmosis, here:​

https://brainly.com/question/1799974

#SPJ2

Where does the fetus normally develop?

Answers

Answer:

in the womb !!

Explanation:

hAve a good night

Answer:

Inside the uterus, the blastocyst implants in the wall of the uterus, where it develops into an embryo attached to a placenta and surrounded by fluid-filled membranes.

Help with this please

Answers

Answer:

ok sike i lied you thought i tried

Explanation:

Controlled scientific experiments include variables. One kind of variable is an independent variable (test variable) and the other kind is a dependent variable (outcome variable.) Which statement best describes the difference between these variables?

A.
The dependent variable does not change and the independent variable does change.

B.
The dependent variable does not change and the independent variable does not change.

C.
The dependent variable is the control and the independent variable is the result.

D.
The dependent variable changes due to the changes made to the independent variable.

Answers

D. The dependent variable will change based on the value of the independent variable

The dependent variable changes due to the changes made to the independent variable is the statement that best describes the difference between these variables. So, the correct option is D.

What do you mean by Variables?

Variables may be defined as those components whose values may be changed during the course of the experiments.

The variations in the dependent variable rely on the value of independent variables. According to the independent variable, the values of dependent variables are met.

Therefore, the dependent variable changes due to the changes made to the independent variable is the statement that best describes the difference between these variables. So, the correct option is D.

To learn more about Variable in experiments, refer to the link:

https://brainly.com/question/347133

#SPJ2

The Galapagos island has a variety of tortoises with different physical characteristics. Can a Domed tortoise survive that lives on Isabella survive on the Island of Espanola? Explain.

Answers

Explanation:

Shell size and shape vary between populations. On islands with humid highlands, the tortoises are larger, with domed shells and short necks; on islands with dry lowlands, the tortoises are smaller, with "saddleback" shells and long necks.

Answer:

Probably not. This is because the islands at Galapagos islands are all diverse and the turtles that live on each island have characteristics that help them survive on their island and not any other island so if you were to move one of the turtles locations it probably wouldn't survive because it doesnt have the needed characteristics do survive.

Explanation:

A student hypothesized that bread mold would grow faster in a dark environment than a well-lit environment. She took four slices of bread from the same loaf, sprayed each with the same amount of water, and sealed them inside plastic bags. She kept two slices on the kitchen counter for six days. She kept the other two slices in a cardboard box inside her pantry for six days. She measured mold growth every two days. The table shows her data.

Based on the results of the experiment, how should the hypothesis be refined?

A. Bread mold cannot grow in a dark environment.
B. The rate of bread mold growth increases with exposure to light.
C. A wooden box will provide more darkness than a cardboard box.
D. The more moisture a slice of bread receives, the more mold it will support.

Answers

The answer is A I believe

Answer:

it is:High moisture and low temperature encourage mold to grow.

Explanation:i took the quiz hope u pass :D

7. Critique: On this page, describe the advantages and disadvantages of the model of human homeostasis used in the Gizmo. In what ways is the model realistic? What factors are not included in the model?​

Answers

Explanation:

hope this helps. you dont have to write all of this just read it and change the wording however you like. this is an answer key not my writing so dont copy it word by word

What is the name of the type of evolutionary change demonstrated by the change color of the moth population ?

Answers

Answer:

The peppered moth

Explanation:

''The peppered moth is an evolutionary instance of directional colour change in the moth population as a consequence of air pollution during the Industrial Revolution.''

4

Select the correct answer.

Andrew, a highly mechanized farmer, has large acres of farmland. He wants to apply pesticides and fertilizers to all his crops spread across his

large land. What should Andrew use to spray pesticides and fertilizers on his land?

OA. trucks

OB. airplanes

Ос. .

harvesters

OD. planters

Reset

Next

Answers

Answer:

The correct answer is:

planters (D)

Explanation:

The key statement in the question is that Andrew wants to apply pesticides and fertilizers to all his crops across his large land. The most effective way of doing this is by using a planter to apply both the fertilizer and the pesticide as the planting occurs. This will ensure that the fertilizers and pesticides are applied directly to the crops and not scattered on the vast land.

Which of the following is not an environment factor affecting a well balanced physiology?
A)
temperature
B)
distance from the ozone layer
C)
altitude
D)
humidity
E)
number of sunny days

Answers

Answer:

B) distance from the ozone layer

Explanation:

The lesson states that environmental factors affecting a well balanced physiology are:

climatetemperature humidity number of sunny daysaltitude

Kate's blood volume is 3.9 L . After three months of diet and exercise, if her blood glucose is 144 mg/dL , how many grams of glucose are in her blood?

Answers

Answer:

300L

Explanation:

So basically 3.9 L is equivalent to 3900 Kg of glucose and when u minus 3900 to 144 is basically 3000 which is 300L

Which is NOT a role of the respiratory system(select all that apply)
a. Taking in oxygen from the external environment
b. Moving air into the trachea and down the bronchi
c. Removing carbon dioxide from the alveoli
d. Transporting glucose to the cells

Answers

Answer:

d. Transporting glucose to the cells

Explanation:

Because DNA is replicated by using the original strands as a template, every DNA molecule has one _____ strand and one _______ strand.
A. Adenine, Thymine
B. Guanine, Cytosine
C. New, Original
D. Nucleotide, Carbohydrate

Answers

A. because all of those things that i mean you are always mad and mad sometimes lol oh lol yes i do you

WILL MARK BRAINLIEST!!!
Recipient Blood Type A can Receive from:
Recipient Blood Type B can Receive from:
Recipient Blood Type AB can Receive from:
Recipient Blood Type O can Receive from:

Answers

Blood A can receive from A and O
Blood B can receive from B and O
Blood AB can receive from anyone
I’m not sure of blood O however but I’m pretty sure they can receive from A and O

Choose all of the areas in which the United States invoked the Roosevelt Corollary to the Monroe Doctrine.

Answers

The correct answer to this open question is the following.

Unfortunately, you did not attach the options to answer this question.

What we can do to help you is commenting on the following.

Throughout history, the United States invoked the Roosevelt Corollary to the Monroe Doctrine to accomplish some imperialistic and interventionists goals in different Central American and South American countries.

We can set some examples here. For instance, that was the case of the US intervention in the Island of Cuba, in Nicaragua, Dominican Republic, Hati, and the US presence for so many years in the Panama Canal.

Let's have in mind that the Roosevelt Corollary to the Monroe Doctrine was originally called for intervening in Latin American countries that could not pay their debt to European creditors.

The message the US wanted to convey to European superpowers that had interests in this region was that from now on, it was going to be the US business to intervene in the Americas. If Europe tried to intervene, it was going to be understood as direct aggression to the United States.


What are three ways a plant's organ systems work together?
A The shoot system delivers food to the root system.
B. The root system delivers materials from the soil to the shoot
system
The ground tissue of the root system protects the vascular tissue
in roots
D. The ground tissue of the root system stores food for later use by
leaves

Answers

Answer: A, B, D

Explanation: credit to the comments on the other. I also did the test

The three ways through which a plant's organ systems work together are as follows:

The shoot system delivers food to the root system.The root system delivers materials from the soil to the shoot system. The ground tissue of the root system stores food for later use by leaves.

Thus, the correct options are A, B, and D.

How do plants deliver water and nutrients to other parts?

Plants deliver water and other nutrients to other parts with the help of vascular tissues like xylem and phloem.

Xylem transports water, nutrients, and other minerals from the soil to all parts.

Phloem mediates the migration of foods from the leaves to the rest of the plants.

The shoot system delivers food to the root system via the vascular tissue phloem. The root system delivers materials from the soil to the shoot system via the vascular tissue Xylem.

The ground tissue of the vascular plant is responsible for storing the carbohydrates constructed by the plants and utilized by the leaves when required.

Therefore, the correct options are A, B, and D.

To learn more about Vascular bundles, refer to the link:

https://brainly.in/question/652706

#SPJ5

How many categories are there on the Modified Mercalli Scale?

Answers

Answer:

i hope this helps!!?

Explanation:

Giuseppe Mercalli (1850-1914) originally developed the scale, with ten levels. In 1902, Adolfo Cancani extended the scale to include twelve levels. August Heinrich Sieberg completely rewrote the scale. For this reason, the scale is sometimes named Mercalli-Cancani-Sieberg scale, or MCS scale.

Answer:

awsten knight

Explanation:

Which color is a very hot main sequence star most likely to have?
A: yellow
B: red
C: blue
D: orange

Answers

blue is the answer yeah

don’t mind my dirty computer haha

Answers

Answer:

All of the above

Explanation:

All of this literally explains what a night sky is what question is that?

What is the most important renewable resource ( In your opinion) and why? What is the most important non-renewable resource (again, in your opinion) and why? Please don't copy and paste.

Answers

Answer:

Renewable: Solar Power

Non-Renewable: Fossil Fuels

Explanation:

I think the most important renewable resource is solar power because it is useable in many areas easily.

I think the most important non-renewable resource is fossil fuels because they can be mass exported and they are cheap.

(please give me my first brainliest thanks!)

I’m giving Brainly...

Why should we recycle in a complete sentence?

Answers

Answer:

We should recycle to keep our earth clean and global warming down, it's the least we can do.

Answer:

We should recycle because plastic water bottles can kill precious animals may be harmed by these plastic surroundings. Picture down below...

Explanation:"Recycling prevents the emissions of many greenhouse gases and water pollutants, and saves energy." said by go.ogle!

Lung cells obtain sodium ions, and chlorine ions from the adjacent blood vessels by which process?

Answers

Answer:

Not sure about the sodium but you might be referring to the Chloride Shift in the lungs.

Explanation:

Help please I will give brainliest

Answers

Answer:

Should be I or H

Explanation:

Answer:

I think it's G

Explanation:

bc why would you transfer heat to something that's already that same temperature it'll have to be different temperatures I believe

Other Questions
In football, the team that has the ball has four chances to gain at least ten yards, ifthey don't gain at least ten yards, the other team gets the ball, Positive numbersrepresent a gain and negative numbers represent a loss, Select all of the sequencesof four plays that result in the team getting to keep the ball,A. 8, -3, 4, 21B. 30, -7,-8, -12C. 2, 16, -5, -3D, 5, 2, 20, -1E. 20, -3, -13,2 what is the rate of change for (2,1), (4,2), (6,3), (8,4) PLSSSSSSS HELPPPPPPP I WILL GIVE BRAINLIESTTTTTTTTTT!!!!!!!!!!!!!!!!!!!!!PLSSSSSSS HELPPPPPPP I WILL GIVE BRAINLIESTTTTTTTTTT!!!!!!!!!!!!!!!!!!!!!PLSSSSSSS HELPPPPPPP I WILL GIVE BRAINLIESTTTTTTTTTT!!!!!!!!!!!!!!!!!!!!!PLSSSSSSS HELPPPPPPP I WILL GIVE BRAINLIESTTTTTTTTTT!!!!!!!!!!!!!!!!!!!!!PLSSSSSSS HELPPPPPPP I WILL GIVE BRAINLIESTTTTTTTTTT!!!!!!!!!!!!!!!!!!!!!PLSSSSSSS HELPPPPPPP I WILL GIVE BRAINLIESTTTTTTTTTT!!!!!!!!!!!!!!!!!!PLSSSS SHOWWW THE WORKKK!!!! What is the value of x? if a sample of 4.50 moles of hydrogen gas was reacted with excess nitrogen, how many moles of ammonia gas would be produced? how do I solve for x? 8. Choose the right word.1. There were too/enough many questions to answer so I only did three.2. The coffee was hot enough/too hot/enough hot to drink so I left it for a minute tocool.3. The room wasn't warm enough/too hot/enough warm so I turned the heating on.4. I didn't buy the jacket because it was big enough/too big/enough big.5. The shoes were small enough/too big/enough small so I didn't buy them.6. It's far too big/small enough/enough small to fit inside the bag.7. I didn't get it because it was too expensive/expensive enough/enough expensive.8. I haven't got too much time/ enough time/time enough to take a holiday this year.9. He didn't do too much work/enough work/work enough to pass the exam.10. It was far too heavy/heavy enough/ enough heavy to pick up How did the North and South view Nullification? Please pls help me :( A skateboard ramp has a slope of 4/9. What is the measure of the angle the ramp forms with the ground the meaning of theme How did Solon's political reforms affect Athenian government?O They gave more power to Athenian citizens.O They supported the rule of Athenian tyrants.O They freed enslaved people living in Athens.O They redistributed the wealth of Athens among its citizens. If you wanted to be a digital artist, what classical form of art would be the best one to study? Please help me this is due soon. Will mark brainliest! The ratio of cats to dogs at an animal rescue is 70:63. If the ratio were to stay the same, how many dogs will there be if there are 10 cats? How have healthcare expenditures changed over time? Explain and describe based on the history provided in the unitand what you know of healthcare costs today. Identify and discuss what you think some of the major contributors mightbe for the rising health science industry costs. Which of the following characteristics only pertains to chloroplasts? SOMEONE HELP PLS!!!!!!!!!!!!!! You are comparing two investments, both of which provide annuity payments in exchange for a lump sum investment today. Each annuity has the same monthly payment for the same number of years. You require the same rate of return for each of these investments. Annuity A pays at the beginning of each month and annuity B pays at the end of each month. Given this information, which one of the following statements is correct? A. Both annuities have the same equal future value. B. Annuity B is worth more today because of the timing of its cash flows. C. Annuity A is worth more today because you will receive one more payment whereas Annuity B receives one less payment. D. Annuity A has a higher present value and a lower future value than annuity B. E. Annuity A has a higher future value than annuity B. HELPPPPPPPPPPP , witch should I pick .