Answer: D
Explanation: The villi increases the surface area for food absortion. Each villus has a network of thin and small blood vessels close to its surface. The surface of the villi absorbs the digested food materials.
Answer:
Mutation. A mistake made while DNA copies which causes changes in DNA
Explanation:
Answer: The adaptations like paddy feet and fur on the outer body is an adaptation for very cold place but not for the rain forest. Explanation: If the outer body of the organism is made of fur then it will protect the inside body from cold and will provide warmth.
She was an English chemist and x ray crystallographer who made contributions to the understanding of the molecular structures of DNA,RNS,viruses,coal, and graphite<span />
