Answer:
A
Explanation:
It allows every human to have their own unique DNA
hope this helps : )
The answer is B because:
Cell walls are made of cellulose and proteins (hence II).
Animal cells don't have cell walls (only cell membrane) but plant cells do so IV
They must be semipermeable since materials for example carbon dioxide and water for photosynthesis have to go into the cell <em>some</em> way.
The human body strives to maintain homeostasis, the state of balance between internal and external change.
It was an asteroid that came to earth two billions years ago and scientists says that there might be another one coming.so we might live in space for a couple of months or years. so that why the dinosaur die.
