Reaction velocity Temperature (°C) 60 Which of these is a description of the relation? A) Reaction velocity decreases with an increase in temperature. B) Reaction velocity always increases with increase in temperature. Reaction velocity remains constant with an increase in temperature. D) Reaction velocity increases up to a certain temperature before decreasing,​

the answer is tropical areas. the tropical areas obtain more

radiant energy from the sun than they lose to space through terrestrial

radiation, and vice versa for polar areas. earth has an energy remaining in the

tropics and an energy scarcity for the polar areas.

explanation:

i believe the answer would be b. hope it : )

a. to encourage apoptosis

the tricuspid valve is present between right atrium and right ventricle