Which of the following may not have been possible without the presence of ozone in the atmosphere?

A) Oxygen may not have been able to accumulate in the atmosphere

B) Photosynthesis may never have developed.

C) Respiration may never have developed.

D) Life may not have been able to move onto Earth’s land surfaces

Astudent reads the following text in a science book: scientific evidence tells us that the cause of earths four seasons is the tilt of earth as it revolves around the sound the student is instructed to illustrate this information in a science book. how will the student illustrate winter in the northern hemisphere? a.earths northern hemisphere will tilt away from the sun. b. earths northern hemisphere will tilt toward the sun. c.earths orbit will be farther away than from the sun d. earths southern hemisphere will tilt away from the sun.

When plants use sunlight to make food, the energy of sunlight is

Analyze how the water cycle affects a food web. now list 3 examples for each below using complete sentences, on how too much water would affect the same web? how about to little water?