Two students spotted some white, eyeless crayfish in the darkness.

Why are the crayfish eyeless?

A.
They have long legs, so they don’t need eyes.

B.
They are white, so they don’t need eyes.

C.
There is natural light in the dark zone, so they don’t need eyes.

D.
There is no natural light in the dark zone, so they don’t need eyes.

Gravity is pulling an object into the sun. the closer the object gets to the sun, the greater the gravitational force that acts on the object, increasing its acceleration. a line graph plotting the speed of the object against time would have which shape? a: straight line of positive slope b: curved line that slopes upward c: curved line that slopes downward d: straight line of negative slope