A fossil can form when A. An organism leaves an imprint in sediment, which hardens into stone.
B. groundwater minerals seep into preserved bone and shell materials.
C. an organism is trapped in sticky plant resin that hardens into amber.
D. All of the above

b

Explanation:

formation of corals which are fossils too

D, or its just A

Explanation:

he movement of air through earth's or any planet's atmosphere is called wind, and the main cause of earth's winds is uneven heating by the sun. this uneven heating causes changes of atmospheric pressure, and winds blow from regions with high pressure to those with low pressure.

i hope this : )

genetic variation will increase because of a new habitat and food source.

explanation: