20points! Which statement below best describes a DIRECTLY proportional relationship?

A. Volume increasing as pressure decreases

B. Moles of a gas increasing but volume decreasing

C. A negative slope on a graph

D. Temperature increased causing pressure to increase at the same time

Depends on the speed of the car.

The population of unionid mussels decreased after zebra mussels were introduced. zebra mussels competed with the unionid mussels for food. the zebra mussels were able to displace the unionid mussels, allowing the zebra mussel population to increase  over the years. the unionid mussel population decreased because  of lack of food.

The answer is fossil fuels.