Most mutations have no effect on organisms. Organisms all have large amounts of genetic code, most of which has no effect. As a result, mutation of this code is rarely meaningful.
I believe it is the crust
Answer:
gravity
Explanation:
gravity is the reason why regular things can't float, why we land when we jump, and why we can't fly.
gravity pulls us towards the ground, towards the center of the earth (inner core)
Answer:
Nervous: carries messages
muscular: moves the body
epithelium: found in cartilage
connective: found in cartilage
Explanation:
The answer is true. Their strike can break aquarium glass and even split open human thumbs.