Answer:
A. the changes in the characteristics within a population that lead to survival.
Explanation:
those that cannot camoflauge or find a way to survive and reproduce, will die off.
The answer is <span>The respiratory system supplies the oxygen that the cardiovascular system transports to the different cells for the production of energy.
When air enters the lungs (part of the respiratory system), it passes all way to the alveoli, the smallest functional units of the lung. There, oxygen from the air enters the capillaries, the smallest blood vessels, next to the alveoli. Once in the blood stream, the cardiovascular system transports oxygen to different cells where it is used for the energy production.</span>
No abiotic things are non-living, and cells are living.
Answer:
The lizard will have a higher metablolic rate and it will have a higher activity level
Explanation:
Fishermen use minnows as bate, the minnows are stored in cold water for slower metabolic rate and a lower acivity level so that the minnows can last longer. It is the opposite of the lizard question
Four chambered heart keeps oxygenated and deoxygenated blood separate and has double circulation while three chambered heart has a single circulation. Two chambered heart only has single atrium and single ventricle
