Place the following events in sequence: A) Runoff from farms enters a pond; B) Methane and hydrogen sulfide are released; C)
Anaerobic bacteria begin to thrive
C, B, A
A, C, B
C, A, B
A, B, C

All but one describes an effect of aging on the digestive system. a) decreased acid secretion b) decreased elasticity of stomach c) capacity to resist damage decreases d) food remains in stomach for less time

What’s the student’s scientific question

If the nucleus of a cell was removed the cell wouldn’t be able to make proteins because