If you do not have variations to be selected by natural or sexual selection on their superior abilities to survive and reproduce successfully then nothing can be naturally selected against the immediate environment.
Answer: B. Lungs
Explanation:
The lungs are the only organ in the body that can float on water.
Answer:
mitochondrion
Explanation:
centrioles are found in animals only, and chloroplast cell wall is found in plants only.
Hope it helps.
Answer:
A. Obtaining nutrients and getting rid of waste
1. right atrium
2. aortic valve
im not sure if that is the answer
thats what i got
