A river separates members of a squirrel population that used to occupy the same geographical area, Thus, option "2" is correct.
What is Allopatric speciation?Allopatric speciation is said to occur when two groups of organisms are separated by a physical or geographical barrier. Examples of such barriers are ocean, mountain range, rivers, etc. A good example of allopatric speciation is Galapagos finch.
Different species of this bird can be found in different islands at Galapos, which is located at Pacific Ocean off South America. The ocean is barrier that isolate the species from one another.
Thus, option "2" is correct.
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Assuming the Lifting Cloud Base Hypothesis to be correct, which part of the Monteverde cloud forest would likely be the least affected by the decrease in moisture? Explain.
The upper area that is still surrounded by cloud base because it will hold more moisture than the lower area.
Lifting Cloud Base HypothesisThe cloud base hypothesis was proposed to explain the widespread amphibian loss in the cloud forest.
If the lifting cloud base hypothesis to be correct, the part of the Monteverde cloud forest would likely be the least affected by the decrease in moisture is the upper area that is still surrounded by cloud base because it will hold more moisture than the lower area.
Thus, the answer is "the upper area that is still surrounded by cloud base because it will hold more moisture than the lower area".
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The ___ of the brain controls our muscle coordination and balance.
Answer:
the cerebellum is at the back of the brain it controls the muscle
Which body systems help the respiratory system move gases between the lungs and the cells of the body?
Answer:
The Cardiovascular System
Explanation:
The respiratory system draws air into the lungs. Oxygen diffuses through the walls of the alveoli and across the walls of the capillaries where it enteres the bloodstream. The oxygen molecules are picked up by red blood cells, which are pumped through the blood vessels by the action of the heart. As the red blood cells carrying oxygen pass through capillaries near the cells, oxygen diffuses into the cells.
Answer:
The respiratory system collaborates with the circulatory system to deliver oxygen and remove metabolic waste. It also aids in blood pH regulation. Respiration is the process through which oxygen and carbon dioxide are exchanged between the atmosphere and the body's cells.
Why might fish exist before amphibians?
Answer:
Because fish are their own species.
Help with this please
Answer:
.
Explanation:
Can someone help me with this please. I dont know if I did this right or not.
Which level of organization is shown in the image?
• cell
• tissue
•organ
© organ system
Answer:
Cells
Explanation:
Cells because the images are close together and small where you could find an organ system, organ, or tissue apart
Describe THREE ways in which parenchyma cells are structurally suited for their
specific function
Answer:
Parenchyma cells are distinguished by their thin walls and the fact that they are alive at maturity. To sustain structure, collenchyma cells produce thicker secondary cell walls. Sclerenchyma cells produce tissues like bark and vascular tissue by thickening their walls and dying off as they mature.
Explanation:
Parenchyma cells are distinguished by their thin walls and the fact that they are alive at maturity. To sustain the structure, collenchyma cells produce thicker secondary cell walls. Sclerenchyma cells produce tissues like bark and vascular tissue by thickening their walls and dying off as they mature.
What are two functions of parenchyma?Parenchyma cells are actively metabolizing living cells present throughout the plant body. These cells have thin primary cell walls. Some of the functions of parenchymatous cells in plants are storage, photosynthesis, secretions, etc. The photosynthesizing parenchyma cells are mostly present in green leaves of plants and have green chloroplasts.
Some of the parenchymatous cells also serve to store metabolites such as oil droplets, starch grain, water, salts, etc. The secretion of resins, tannin, hormones, nectar, and other substances is done by specialized parenchymatous cells.
Thus, Parenchyma cells are distinguished by their thin walls and the fact that they are alive at maturity.
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A hypothetical light bulb is provided 450 kilojoules of electricity; however, 90 kilojoules of electric energy was wasted producing heat, while the rest of the energy was actually used to produce light. What is the % efficiency of this light bulb?
*
45%
80%
0.2%
20%
None of the above
Describe the relationship between the level of oestrogen and the endometrium from day 7to day 14
The rainforest contains half of the Earth’s wildlife and at least two thirds of its plant species. It can hold great quantities of water and is very important to the planet’s water cycle. Rainforests remove vast amounts of CO2 from the atmosphere and replace it with oxygen. Which of the following statements best summarize the above information about rainforests?
a.
The majority of the planet’s oxygen is generated from the rainforest.
b.
Two-thirds of all plants originated from the rainforest.
c.
The rainforest is a major catalyst for the planet’s water cycle.
d.
The rainforest is important to life as a whole on the planet.
Answer:
D) The rainforest is important to life as a whole on the planet.
Explanation:
While the other options are true, the statment states that it is not only one of them. It is stated that the rainforest provides a habitat for for 1/2 of Earth's wildlife and 2/3 of it's plants. This proves that 'B) Two-thirds of all plants originated from the rainforest' is correct. But, it also states that the rainforest removes CO2 from the air and puts oxygen back out, proving that 'A) The majority of the planet’s oxygen is generated from the rainforest,' is also correct. 'C) The rainforest is a major catalyst for the planet’s water cycle' is also proven true because it is said that the rainforest holds great quantities of water, making it very important to the planet's water cycle. These are all important to the planet, making 'D) The rainforest is important to life as a whole on the planet,' the most accurate statement.
Which of the following is an example of an adaptation?
Answer:
An adaptation is a trait an animal has, physical or behavioral, that helps it survive or act in unique ways.
Enternal Supplememts Explore similarities
The expression 'enternal supplements' refers to the diet additives used in this feeding methodology, which is based on gastrointestinal digestion.
What is Enternal digestion?Enternal nutrition is a type of digestion that provides nutrients (either micronutrients or macronutrients) and calories by directly using the gastrointestinal tract.
Enternal digestion is associated with the use of diet supplements that help to obtain the required nutrients.
In conclusion, enternal supplements are diet additives used in this feeding methodology, which is based on gastrointestinal digestion.
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Alewife
populations
undergo extreme
fluctuations
sometimes
experiencing
large scale die-
offs from
unknown causes.
This is an
example of what
population
growth pattern?
A. Stable
B. Exponential
C. Irregular
how can i create a dam that still allows fish to swim through and not lose their habitats?
Answer:
A dam that could allow fish to still pass through is a fishway/fish pass its a "fish ladder" that is structured on or around artificial or natural barriers to allow for fishes natural migration and the movement for potamodromous species.
Which RNA brings instructions from DNA ?
A. tRNA
C. mRNA
B. rRNA
D. RNA
Name the trophic levels in an ecosystem and explain how energy moves through the trophic levels. Use the food chain and food web in the discussion. ( Will Mark Brainliest).
Answer:
Eating prey.
Explanation
PLEASE HELP!!!!!!!!! 20 POINTS
Which of these is a function of the placenta?
A. To store the embryo's wastes
B. To hold the fetus upside down for birth
C.To digest food for the fetus
D. To bring oxygen to the embryo's cells
In seals, the gene for the length of the whiskers has two alleles. The dominant allele (A) codes long whiskers and the recessive allele (a) codes for short whiskers. if one parent seal is pure long-whiskerd and the other is short-whiskered.what percent of offspring would have short whiskers?
Answer:
None or Null
Explanation:
Long whiskers is AA(dominant)
short whiskers is aa(recessive)
parental generation:
AA aa
cross = Aa, Aa Aa Aa
First fillial generation = Aa, Aa, Aa, Aa
:.No offspring will have short whiskers as Long whiskers allele are dominant
explain how the age of the oceanic crust provided evidence for seafloor spreading
Answer:
The principle of seafloor spreading states that new ocean crust is always being formed, and that this crust is slowly carried farfar from its factor of starting place over a duration of time. The examine of the repeated reversal of the Earth's magnetic poles through the years has supplied convincing proof of seafloor spreading.
Hope this helped! I would appreciate a Brainliest if you wouldnt mind, and have a good day!
Several people in Kate’s town began suffering from a common disease over the past month. Kate approached a group of environmental scientists to help solve the problem. Which field/subject can help the environmental scientists address the issue?
Answer:
Epidemologists.
Explanation:
Epidemologists are responisble for systematically ivestigating the distribution (frequency, patterns of who disease spread between) and determinants (causes, risk factors, pathogen) of health-related states and events in specified populations (neighborhood, school, city, state, country, global)."
Which of the following are controversies over water usage in the United States? Select the three correct answers. (2 points)
whether people should build dams on rivers
whether people should drink bottled or tap water
whether there are hidden costs to tap water
whether water treatment should be privatized
whether dams increase the salt level of water
These are points over water usage in the US are whether people should build dams on rivers ,whether people should drink bottled or tap water, whether water treatment should be privatized.
What Contaminated water and loss in US?Contaminated water and a loss of simple sanitation are undermining efforts to give up excessive poverty and disorder withinside the world's poorest countries. In 2017, 2 billion humans global did now no longer have get entry to to simple sanitation centers consisting of bathrooms.
As the U.S. water deliver decreases, call for is about to increase. On average, every American makes use of eighty to a hundred gallons of water each day, with the nation's predicted overall day by day utilization topping 345 billion gallons—sufficient to sink the country of Rhode Island below a foot of water.
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Answer:
whether people should build dams on rivers
whether people should drink bottled or tap water
whether water treatment should be privatized
Explanation:
I just did the quick check and i got it correct :)
suggest how these synthetic plant growth substances spread through the plant
Answer:
Plant growth regulators may be synthetic compounds, such as IBA and Cycocel, that mimic naturally occurring plant hormones, or they may be natural hormones that were extracted from plant tissue, such as IAA.
Explanation:
Plant growth regulators may be synthetic compounds, such as IBA and Cycocel, that mimic naturally occurring plant hormones, or they may be natural hormones that were extracted from plant tissue, such as IAA.
What are synthetic plant growth regulators?
Plant growth regulators are substances that, when added in small amounts, modify the growth of plants, usually by stimulating or inhibiting part of the natural growth regulatory system. Synthetic plant growth regulators hold the promise of becoming important tools in efforts to increase the world food supply.
What are synthetic hormones in plants?
Synthetic plant hormones or PGRs are used in a number of different techniques involving plant propagation from cuttings, grafting, micropropagation and tissue culture. Most commonly they are commercially available as "rooting hormone powder".
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is se*ual jealousy related to testosterone level?
Answer:
Yes
Explanation:
This is because testosterone is the hormone for se*x drive
Why are earthworms described as hermaphrodites?
Why are antibiotics unhelpful for treating the common cold?
A. Colds are caused by bacteria.
B. Colds are caused by antibiotics.
C. Antibiotics cannot treat disease.
D. Antibiotics attack only bacteria.
Answer:
D. Antibiotics attack only bacteria.
Explanation:
The common cold is caused by virus, so it can not be cured by antibiotics.
Because, antibiotics only attacks bacteria. So, option (d) is the answer.
Answer: the answer to ur question would be answer choice D
Explanation:
The fossil record contains
specimens of approximately
250,000
known
species. The odds of finding fossil
evidence are extremely low
Decause the remains of an
organism usually
______
or are
_______
by
scavengers. Fossils are more likely
o form in the absence of ____
Typically,____
organisms
do not fossilize even though they
were most likely very common in
ancient communities.
These are remains of plants and animals which have been preserved in the earth crust for a long period of time.
They become fossilized when there is little or no erosion and in the absence of scavengers.
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Nitrogen is an important element for which macromolecules? Why?
Answer:
Nitrogen in the reduced form is the major component of the three most important biological macromolecular structures: (i) proteins/polypeptides, (ii) DNA and RNA, and (iii) polymers of amino sugars.
There are four major classes of biological macromolecules - carbohydrates, lipids, proteins, and nucleic acids. Each are made up of different elements. Nitrogen is found in two of these macromolecules - proteins and nucleic acids.
Nitrogen is a naturally occurring element that is essential for growth and reproduction in both plants and animals. It is found in amino acids that make up proteins, in nucleic acids, that comprise the hereditary material and life's blueprint for all cells, and in many other organic and inorganic compounds.
Answer:
Proteins/polypeptides, DNA/RNA, and polymers/amino acids.
Explanation:
Nitrogen is EXTREMELY important for many macro molecular structures, and is found in the most important parts of the body. You need all of these things to keep you alive.
Hopefully this helped you.
Help with the meanings of the following words with the correct definition of the choices i sent below please help urgent.
Genetics: the study of heredity
Gene: characteristic of an organism found on a chromosome
Allele: variation of a characteristic/ gene
Law of segregation: 2 alleles of a trait separate during meiosis
Law of independant assortment: chromosomes/ genes separate randomly during meiosis
genotype: genes present in an individual
phenotype: individuals observable traits
heterozygous: 2 alleles of a pair of alleles are different
homzygous: 2 alleles of a pair of alleles are the same
dominant allele: trait is always expressed when present
recessive allele: trait is only expressed when 2 copies are preesnt
co-dominance: two traits are dominant/expressed
incomplete dominance: one trait is partically dominant over another
se-linked inheritance: gene found on the X chromosome
polygenic inheritance: added effect of 2 or more genes such as skin colour
3. How can freshwater ecosystems be impacted by global climate change?
They can freeze.
O They can flood.
They can become salty.
O They can dry up.
Answer:
I think its "They can flood."
Explanation:
The reason for this is due to the fact that climate change mainly deals with warming up the earth because of a hole in the ozone. But, I may be wrong... Its an impact on freshwater sources after all.
