Umm that really is a lot of words there but I will try to find a explanatory answer
It’s b.
He grouped the types of creatures according to their similarities: animals with blood and animals without blood, animals that live on water and animals that live on land.
answer:
it took 17,000 years for CO2 to go from 200 to 300 ppm.
<em>-- please mark the brainliest and click the thanks button if correct :)</em>
Answer:
To maintain homeostasis, unicellular organisms grow, respond to the environment, transform energy, and reproduce. The cells of multicellular organisms become specialized for particular tasks and communicate with one another to maintain homeostasis. ... Active transport requires energy.
