The term you're referring to which scientists implement to describe "different forms of life on Earth" is perhaps "Organism".
Answer:
i think it's D
Explanation:
my bad if u get it wrong or anything
It’s c cause I know and I was just too lazy to type the word lol
Skeleton is what the connective tissue uses to stay part of the body. Without the skeletal system we wouldn't be able to move our muscles.