Answer:
Objective(s)
In your own words, what was the purpose of this lab?
I believe the purpose of this lab is to see how much our society is evolving.
Hypothesis
In this section, please include the if/then statements you developed during your lab activity. These statements reflect your predicted outcomes for the investigations. You will investigate two different versions of the tree environment as it changes over time: light-colored bark and dark-colored bark. Be sure to list your hypothesis for each environment below.
Example: If I investigate the light-colored bark environment, then I will observe an increase in the light-colored peppered moths over time.
Hypothesis for the light-colored bark: There will be an increase in light-colored of light-colored moths and an decrease in dark-colored moths.
Hypothesis for the dark-colored bark: There will be an decrease in light-colored moths and an increase in dark-colored moths.
Procedure
The procedures are listed in your virtual lab. You do not need to repeat them here. Please be sure to identify the test variable (independent variable) and the outcome variable (dependent variable) for this investigation.
Reminder: The test variable is the item that is changing in this investigation. The outcome variable is the item that you are measuring in this investigation.
Test variable (independent variable): The test variable is the colored bark
Outcome variable (dependent variable): The outcome variable is the colored moths population
Data
You will investigate both environments. Record your data for each trial of that environment in the data charts below.
Pre-Industrial Revolution Bark (Light-colored)
Generation
Rate of Survival for Light-colored Peppered Moths
Rate of Survival for Dark-colored Peppered Moths
1
80
20
2
79
21
3
100
0
4
100
0
5
97
3
Post-Industrial Revolution Bark (Dark-colored)
Generation
Rate of Survival for Light-colored Peppered Moths
Rate of Survival for Dark-colored Peppered Moths
1
36
64
2
19
81
3
0
100
4
13
88
5
0
100
Conclusion
Your conclusion will include a summary of the lab results and an interpretation of the results. Please write in complete sentences.
What caused the tree bark to become darker?
What caused the tree bark to become darker is the time of the day the darker it is the darker the bark is.
In the lab simulation, which color peppered moth was able to have the higher rate of survival on the light bark?
The light-colored moth had a higher rate of survival than the dark-colored moth.
In the lab simulation, which color peppered moth was able to have the highest rate of survival on the dark bark?
The dark-colored peppered moth had a higher rate of survival than the light-colored moths.
During the Industrial Revolution, explain what caused the population of light-colored peppered moths to decrease and the population of dark-colored peppered moths to increase over time. Be sure to include how the ability to survive and reproduce impacts the process of natural selection.
What caused the population of light-colored moths to decrease and the population of dark-colored moths to increase over time was because the dark-colored moths could camouflage themselves on the dark bark trees and the light-colored moths couldn’t protect themselves from predators because they had no where to hid.
Predict which color peppered moth would have a better chance of survival in your neighborhood? Explain why.
I believe that the dark-colored peppered moth would have a better chance of survival than the light-colored moths because there is mainly dark bark near my neighborhood instead of light-colored peppered moths.
Explanation:
Nitrogen fixation is done mostly by....
Answer:
Nitrogen fixation occurs between some termites and fungi. It occurs naturally in the air by means of NO x production by lightning. All biological nitrogen fixation is effected by enzymes called nitrogenases. These enzymes contain iron, often with a second metal, usually molybdenum but sometimes vanadium.
Explanation:
Answer:
Rhizobium and blue green algae
⚠️⚠️⚠️ i will mark brainliest identify one level above and below alveoli, and list the levels of organisation in humans
Explanation:
A cell is the smallest independently functioning unit of a living organism. Even bacteria, which are extremely small, independently-living organisms, have a cellular structure. Each bacterium is a single cell. All living structures of human anatomy contain cells, and almost all functions of human.
1. Hot coffee is stirred with a spoon, the spoon gets hot due to _______________. 2. A chair is placed several feet from a fire in a fireplace. The fireplace has a glass screen. The side of the chair facing the fireplace gets warm because of_______________. 3. A certain type of decorative lamp contains colored liquids. These liquids form globs that break off and rise to the top of the liquid. The globs rise due to _______________.
Answer:
Explanation:
1.Hot coffee is stirred with a spoon, the spoon gets hot due to _______________.conduction
2.The fireplace has a glass screen. The side of the chair facing the fireplace gets warm because of_______________. Radiation
3. A certain type of decorative lamp contains colored liquids. These liquids form globs that break off and rise to the top of the liquid. The globs rise due to _______________.Convection
hope this helps
Answer:
1) Conduction.
Heat transfers to a spoon as the heat energy is passed from the coffee to the spoon through conduction.
2) Radiation
The heat on the glass surface gets radiated into the chair which causes the chair to warm up.
3) Convection
The globs are hot and less dense, which rises to the top whereas the cold globs are more dense which causes it to settle down.
Help me!!! Please!!!!!
7th grade science
Answer:
Eukaryotic means "true nucleus" in Greek.
Have a nucleus.
Have membrane bound organelles.
Typically much larger than prokaryotic cells.
Multicellular, meaning more than one cell.
Explanation:
when does seeds of plants for plants aerobic respiration please give answer in one sentence it is urgent i will mark brainliest
Answer: Seeds of plants only perform anaerobic respiration in extreme conditions. usually it's done when there is a lack of oxygen or no oxygen available at all.
What are cat and dog paws adapted for?
Answer:
Explanation:
The cat and dog paws are adapted for walking, running, climbing and digging. Both the animals can use their front paws and back paws for different needs or just as the situation ahead of the demands.
Which of the following describes a second class lever
1. The fulcrum is located between the effort force and the load.
2. The effort force is located between the fulcrum and the load force.
3. The load force is located between the effort force and the fulcrum.
Answer:
I think the answer might be number 2
In the second class lever, the load is between the effort force and the fulcrum. The correct option is 3.
What is a fulcrum?The term can refer to the juncture or assistance on which a lever rotates, as well as the focal point of a critical activity or situation.
The term "fulcrum point" in zoology refers to an anatomical structure that serves as point of support.
The load in second-class levers lies among both the effort and the fulcrum. A wheelbarrow is a prominent example, where the effort moves a great distances to lift a substantial load, with the axle and wheel acting as the fulcrum.
In a second-class lever, the effort is distributed over a large area in order to raise the load a short distance.
Thus, the correct option is 3.
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Part 4 - Natural Selection and Adaptations
3 of 113 of 11 Items
Item 3
A scientist studied a snail population that had a variation of shell colors. The number of each differently colored snail shell was recorded. The graph shows the data the scientist collected.
Over time, the rocks on which the snails lived became covered with dark-colored seaweed.
Which graph best represents the range of colors in the snail population that resulted from natural selection after the dark-colored seaweed covered the rocks?
There are different types of natural selection. When one of the extremes phenotypes is being favored, directional selection is going on. Meanwhile, balancing selection increases the proportion of intermediate phenotype.
-----------------------------
Since I do not have the graphs, I will set different potential scenarios
Let us assume the snails shell has three phenotypes: light brown, brown, and dark brown.Light brown and dark brown are the extreme phenotypesLet us also assume that seaweed is brown-colored.Scenario 1: More light brown individuals than brown and dark brown
Probably after the dark-colored seaweed covered the rocks, snails needed to camouflage to avoid predation. So they must have suffered a change in color from light brown to dark brown.
Since this new trait is beneficial, natural selection favored it.
So animals change from being light brown to dark brown.
The type of natural selection acting here is directional selection.
A population that is under the effects of directional selection, experiences an increase in the proportion of individuals expressing an extreme phenotype, different from the original one.
In these cases, interactions between living organisms and the environment modify in the same direction.
So, the most abundant individuals turned from being light brown to being dark brown.
After dark-colored seaweed covered the rocks, the number of dark brown individuals increased, and the light brown individuals decreased.
**********************
Scenario 2: More brown individuals than light brown and dark brown
This is the same situation as before. In this case, there were more brown individuals than snails expressing extreme phenotypes.
**********************
Scenario 3:
Now let us assume three different phenotypes: Yellow, brown and greyYellow and Grey are the extreme phenotypesSeaweed is brown-colored.Let us suppose that the original number of individuals was higher for one of the extreme traits, either yellow or grey.
After the seaweed-covered rocks, snails needed to camouflage to avoid predation, so they changed their color from yellow or grey to brown.
In this scenario, the intermediate phenotype is being favored by natural selection over the extreme phenotypes.
Balancing selection -or Stabilizing selection-, decreases the number of individuals expressing the extreme phenotype and favors individuals that exhibit medium-range characteristics. These are the ones that get to survive. Selective pressure is against h0m0zyg0tes.
In this case, the number of individuals expressing yellow or grey shells decreases, while individuals with brown color increase.
In the attached files you will find graphs for the three scenarios.
--------------------------
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I will award 60 points :)
When completing fruit fly crosses, what is counted at the end of the cross?
A.parent flies only
B.offspring and parent flies together
C.offspring flies only
Answer:
A complete fruit fly crossing requires that at the end of the crossing only offspring flies be counted
Explanation:
The fruit fly —Drosophila melanogaster— was one of the species used by Mendel to carry out his experiences related to genetics. Its rapid reproduction allowed the observation of hereditary characteristics —such as eye color and wing size— in the offspring.
Any experiment in genetics involving the crossing of fruit flies must ultimately take into account the offspring flies, their characteristics and phenotypic proportions.
Regarding the other options:
The characteristics and number of the parent flies are data already known before the crossing of fruit flies, so they do not represent a relevant data to be taken into account at the end of the crossing.
When a molecule passes between the phospholipids of the cell membrane it is
called?
Answer:
Water also can move freely across the cell membrane of all cells, either through protein channels or by slipping between the lipid tails of the membrane itself. Osmosis is the diffusion of water through a semipermeable membrane
What are the products of photosynthesis?
C 3H 6O 3 + 6O 2
C 6H 12O 6 + 3O 2
C 6H 12O 6 + 3H 2O
C 6H 12O 6 + 6O 2
Answer:
C6H12O6 + 6O2
Explanation:
Carbon dioxide and water is used to make glucose (C6H12O6) and oxygen (6O2).
Which is a resource that the National Park Service manages?
memorials
wildlife refuges
ecosystems
endangered species
Answer:
wildlife
Explanation:
ur welcome
Help me!!!!
It's 7th grade science
Answer:
do not have a nucleus is the answer to the second one
small DNA floats freely in the membrane
Which option describes a strong argument against the development of nuclear power? A nuclear power company is proposing a nuclear power plant near a quiet, small waterside town. The company is promoting this development by stating that nuclear power does not produce pollutants.
Answer:
The correct answer is B) The company is promoting this development by stating that nuclear power does not produce pollutants.
Explanation:
Whilst the process of power generation itself does not produce environmental pollutants like fossil fuels which features the emission of carbon monoxide when they are partially combusted, it does leave behind radioactive wastes, in the same way, combusted charcoal or wood leaves ash behind.
The challenge with radioactive wastes is that they are inimical to human health and can remain so for hundreds of centuries.
Cheers
What is the center of the atom called?
A Electron
B Neutron
C Nucleus
D Proton
The center of the atom is called the nucleus. The correct option is B.
How is the center of the atom called?The nucleus is the central region of an atom that contains most of its mass.
It is composed of protons and neutrons, which are collectively known as nucleons.
Protons have a positive charge, while neutrons have no charge. Together, protons and neutrons form the nucleus and are responsible for the stability of the atom. Surrounding the nucleus are electrons, which have a negative charge and orbit the nucleus in various energy levels or electron shells. The nucleus is highly dense and compact compared to the electron cloud surrounding it.
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what is the difference in potential between two charges called
Answer:
volt
Explanation:
The potential difference is expressed in volt (V). The potential difference between two points is said to be 1 volt if the work is done in moving 1-coulomb charge from one point to other is 1 joule. 1 volt= 1 joule/ 1 coulomb Unit for measuring the potential difference is volt and instrument used for measuring potential difference is a voltmeter.
Answer:
Its potential is taken as zero potential. Thus the positively charged conductor has more positive potential than the earth. A negatively charged conductor has negative potential less than that of the earth. The electric potential difference between two points in an electric circuit is the work done in moving a unit positive charge from one point to the other.
identify the biomes on the map and then answer the questions that follow which biome has the warmest temperatures and the most rainfall
Answer:
tropical rain forest
Explanation:
it has ran in the name
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how does matter move from the hydrosphere into the biosphere explain in your own words
Water mover form hydrosphere i.e river to biosphere i.e atmosphere by a process of evaporation.Thus, we can say that matter is move from hydrosphere to biosphere.
What is hydrosphere and biosphere?Hydrosphere:-
The hydrosphere is the collective mass of water which is found on under, or above the surface of earth. Although earth hydrosphere is 4 billions old. A planet's hydrosphere can be liquid, vapor or ice.
Biosphere:-
The region or area of surface where living organisms survive their life are called as biosphere. The biosphere is a narrow zone on the surface of the earth where soil, water, and air combine to survive life.
Evaporation:-
The process in which water or liquid converts into vapor is called as evaporation. In the case of water it starts vaporization at 100 degree C.
So, we can say that the conversion of matter from hydrosphere to biosphere is successfully achieved by evaporation.
Therefore, Water mover form hydrosphere i.e river to biosphere i.e atmosphere by a process of evaporation.Thus, we can say that matter is move from hydrosphere to biosphere.
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A form of simple cittusion is Osmosis. In which direction will water flow in the process of Osmosis?
A. Water will flow from low concentration to higher concentration
B. Water will flow with the solutes, against the concentration gradient
C. Water will flow towards the solutes (.e. toward the higher salt concentration)
D. Water will flow away from the solutes, with the concentration gradient
Answer: D
Explanation:
osmosis, water always moves from an area of higher water concentration to one of lower concentration.
Need answer ASAP!!
Which describes a species?
A. organisms that live in the same area
B. organisms that breed and produce fertile offspring
C. organisms that look similar
Answer:
B
Explanation:
organisms that breed and produce fertile offspring
Answer:
B. organisms that breed and produce fertile offspring
Explanation:
Verified correct with test results.
Help asap!
The broadest group an organism can be classified into is its:
A. kingdom
B. domain
C. order
Answer:
B. Domain
Explanation:
In order from broadest to most specific:
Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species
Answer
Explanation:
The broadest category in the Linnaean system is the kingdom. Figure above shows the Animal Kingdom because Homo sapiens belongs to that kingdom. Other kingdoms include the Plant Kingdom, Fungus Kingdom, and Protist Kingdom. Kingdoms are divided, in turn, into phyla (phylum, singular)
What is crossing over in meiosis?
What type of transport is secondhand smoke
PLEASE HELP ME!!!
Which of these DNA sequences will produce the following m-RNA: AGC-UAC-ACU?
Hint: Remember in mRNA Thymine is replaced by Uracil.
A TCG-ATG-TGA
B TCG-TAC-ACT
C TCG-ACG-TGA
D AGC-TAC-ACT
Answer
A, because If you just match the base pairs in the question to A they would match up
The DNA sequences will produce the following m-RNA: AGC-UAC-ACU is TCG-ATG-TGA. The correct option is A.
What is a DNA sequence?Finding the nucleic acid sequence, or the order of nucleotides in DNA, is the process of DNA sequencing. The four bases—adenine, guanine, cytosine, and thymine—are arranged in this way using any technique or technology.
Adaptor molecules that can recognize and bind to the codon, as well as the amino acid at a different place on their surface, are necessary for the translation of mRNA into protein.
These adaptors are made up of a collection of tiny RNA molecules called transfer RNAs (tRNAs), each of which is made up of roughly 80 nucleotides.
Therefore, the correct option is A. TCG-ATG-TGA is the sequence of m-RNA: AGC-UAC-ACU.
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Where does a hydrogen bond form between 2 water molecules?
Answer:
Water molecules forming hydrogen bonds with one another. The partial negative charge on the O of one molecule can form a hydrogen bond with the partial positive charge on the hydrogens of other molecules. Water molecules are also attracted to other polar molecules and to ions.
Answer:
The partial negative charge on the O of one molecule can form a hydrogen bond with the partial positive charge on the hydrogens of other molecules. Water molecules are also attracted to other polar molecules and to ions. I hope this helps, I looked it up on google.
Explanation:
Edxcel alevel biology past papers: some of the blood plasma of individuals who have survived infection wtih Ebola can be collected. This can be used in the treatment of individuals currentlty infected with Ebola. Explain why the blood plasma from survivors can be used to treat new cases of Ebola infection.
Answer:
This was the only treatment options adopted for the Ebola in 1995 in the Democratic Republic of Congo. The assumption was that immune response is generated by the virus in the WBC of the infected individuals. These response produce antibodies.
A total if 8 patients were transfused with these blood contained antibodies, but one of these died, the remaining 7 patients survived.
The antibodies were believed to have multiplied(produced b-cells) to neutralize the Ebola virus(antigens) and to ensure the survival of the patients
Explanation:
Which of the following processes produces the most ATP? a aerobic respiration b glycolysis c alcoholic fermentation d lactic acid fermentation
Answer:
b) glycolysis
Explanation:
Up to 36 ATP can be produced from one glucose molecule through aerobic reactions. Therefore, option (A) is correct.
What is aerobic respiration?Aerobic respiration supplies energy to fuel all cellular functions. The reactions result in the production of ATP, which can then be put to use to power other life-sustaining processes, such as growth, repair, and maintenance.
The release of energy that was stored in carbohydrates and lipids during photosynthesis and the subsequent availability of that energy to living organisms is the purpose of the series of enzyme-controlled events known as aerobic respiration.
Glycolysis, the Krebs cycle and respiratory electron transport contribute to the production of 36 ATP for every molecule of glucose that is used up during aerobic cell respiration.
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Why can humans not see ultraviolet (UV) light?
Answer:
Most humans cannot see ultraviolet light because it has a smaller wavelength than violet light, putting it outside of the visible spectrum.
[tex]hopethishelpsyou[/tex]
With the magnification of 10x through the lens of the eyepiece and the shortest objective, you get how much magnification?
100x
40x
400x
1000x
With magnification of 10x through the lens of the eyepiece and the medium length objective, you get how much magnification?
100x
40x
400x
1000x
(i just chose random answers so don’t mind that but I need HELP!!)
Answer:
10x to shortest is 40x
1x to medium is 100x
A carnivore that eats other carnivores is a...
Answer:
canibal or carnivore
Explanation:
if you meat. you're a carnivore
