D. The ability to survive and reproduce
They are basically the next step up from atoms. They are smaller living organisms. (might not be helpful but it's a start)
Answer: C
Explanation: Thymine pairs with Adenine and Cytosine pairs with Guanine.
Answer:
The villi in the small intestine provide a large surface area with an extensive network of blood capillaries. This makes the villi well adapted to absorb the products of digestion by diffusion and active transport.
Explanation:
