2. During what state is the sympathetic nervous system active? (1 mark)

3. What organs are affected during the sympathetic nervous system? How are they affected (make sure to explain increases and decreases) and why are they affected in that way? (4 marks)

What would be the expected effect on plants if the atmospheric CO2 concentration was doubled?

A) All plants would experience increased rates of photosynthesis.

B) C3 plants would have faster growth; C4 plants would be minimally affected.

C) C4 plants would have faster growth; C3 plants would be minimally affected.

D) C3 plants would have faster growth; C4 plants would have slower growth.

How are the oceans affected by climate change?