The graph below shows the effect of carbon dioxide levels on the rate of photosynthesis.

if the amount of carbon dioxide available to the plant approaches zero, what will happen to the plant's rate of photosynthesis?

a.
it will increase, then decrease.
b.
it will decrease.
c.
it will not change.
d.
it will increase.

The table below shows the number of foot bones in some horse fossils.horse fossil recordhorse fossil number of foot bonesp 19q 17r 24s 13ancient horses had more bones in their foot then present-day horses. the present-day horse has 11 foot bones. what is the correct order of evolution of the horse starting from the youngest fossil? a. q p r s b. s r p q c. s q p r d. r p q s