Answer:
Option A... Because cholesterol prevents membrane from freezing and maintain membrane fluidity
I would break the bones and see what kind of fossils are inside
I'd say option B. Vitamin D and Calcium are needed to have strong bones, so it'd be most logical for this to be the answer.
Hope this helps!
The same time, carbon dioxide that is dissolved in the blood comes out of the capillaries back into the air sacs, ready to be breathed out. Blood with fresh oxygen is carried from your lungs to the left side of your heart, which pumps blood around your body through the arteries.
Answer:
This is a hint, In ecology, a population consists of all the organisms of a given species that live in a particular area. The statistical study of populations and how they change over time is called demography. Ecologists often estimate the size and density of populations using quadrats and the mark-recapture method.
Explanation: