A, the amino acid of a lipid is a fatty acid.
Answer: Animals whose body temperature is determined in part by the environment are called “ECTOTHERMS.”
Explanation: They can have quite a high body temperature by taking advantage of external conditions, such as basking in the sun to warm up. Animals, like humans, that control their body temperature internally are called “endothermic
Sand , water , and minerals
No system is closed off by it surroundings.
It help because if the the plouttion is because of water it will rain
