Answer:
Red blood
Explanation:
The bluish color of veins is only an optical illusion. Blue light does not penetrate as far into tissue as red light. If the blood vessel is sufficiently deep, your eyes see more blue than red reflected light due to the blood's partial absorption of red wavelengths.
Answer: Option D
Adaptation is a trait that gives an organisms a reproductive advantage in the current environment.
Explanation:
Adaption or adaptive trait is a trait posses by an organism that play a functional role in its current environment as a result of natural selection. These traits help organisms to meet their basic needs and survive in their environment. Organisms body part undergoes changes like coloring, physical appearance and many more make organisms to have reproductive advantages.
Answer:
Energy that is not used in an ecosystem is eventually lost as heat. Energy and nutrients are passed around through the food chain, when one organism eats another organism. In each case, energy is passed on from one trophic level to the next trophic level and each time some energy is lost as heat into the environment.
Explanation:
<span>The downward force acting on an object in free fall is the force of "GRAVITY"
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