Answer:
It is an everyday life theory because it is not supported by evidence.
Explanation:
This is something not supported by evidence there were no humans around to tell us today from way back then.
Answer: The structure of the circulatory system helps with homeostasis, as it helps to transport oxygen and nutrient - rich blood throughout the whole body
Explanation:
The circulatory system is just basically a transport system transporting oxygenic, nutrient rich blood, or you can think of it as an extension system for the respitory system, after all, the whole body interacts to keep you strond and healthy.
Both a b c are the right answer choice for this question