Answer: An exoskeleton is the external skeleton that supports and protects an animal's body, in contrast to the internal skeleton of, for example, a human. i think its B
Explanation: hope this helps!
The organelle is called the mitochondria
Answer:
False
Explanation:
The planets orbit because of the suns gravitational pull
The correct answer would be the last one: "evolved from past organisms." This theory basically just states that all living organisms evolved from a single common ancestor. Hope this helped! :)