Plz
a prehistoric clamshell is buried by sediment on the seafloor. over time, the sediment turns to rock, and the clamshell dissolves away. this leaves behind a cavity in the rock that is shaped like the clamshell.
what kind of fossil is this clamshell-shaped cavity?
a.
a mold
b.
a carbonized fossil
c.
a petrified fossil
d.
a cast
the rock and fossil record shows that
a.
both gradual and sudden changes have occurred during earth's history.
b.
all of the changes during earth's history have been slow and gradual.
c.
the earth has not changed very much over the course of its history.
d.
all of the changes during earth's history have been very sudden.

starchy vegetables are high in carbohydrates.

starchy vegetables contain more carbohydrates than non-starchy vegetables.

explanation:

there are two primary categories of carbohydrates, essentially differentiated on the basis of their carbohydrate content (which is in the form of starch - a complex carbohydrate):

those vegetables which contain little amounts of starch are termed as non-starchy vegetables, and some examples include: artichokes, broccoli and bean sprouts.

vegetables high in their starch content are distinguished as starchy vegetables, and some examples include: potatoes, chickpeas and corn.

the electromagnetic energy from the sun arrives in the form of visible and invisible light.

well for one plants are always the producer, so a is the answer. a wolf is more of the consumer(predator) and the deer is the prey so i know those two are out of the question. also mushrooms are fungi/fungus so a is the producer.

a lot of people sadly don't know the best way to learn is cheating off of your friends or this amazing thing called google