In the some areas of africa, droughts have caused clean drinking water sources to dry up. how would technology most likely be useful for this region?

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.

Explain how sequences of amino acids in proteins can be used to reveal relationships among organisms.

One of the reasons that stars are so large is because