Hopes this helps:
Answer:
The body of a fish is streamlined because, it increase the speed of the fish in the water. The more the streamlined shapes more easier for the fish to swim in the water.
Cretaceous jurassic triasic
I think it’s C but I’m not fully sure so wait for others just to make sure
Answer:
B. method by which neurons communicate
We breathe in air, not straight oxygen. Attached is a pie chart showing roughly what percentage of what is in the air we breathe