What did chloroplasts evolve from according to the endosymbiotic hypothesis?

Melting glaciers is a serious threat to the environment what is the possible consequence of melting glaciers on polar bears?

Which statements best describe monsoons? check all that apply. they force cool, moist air from oceans to rise. they are winds that blow in the opposite direction of a normal wind. they bring rain in the summer and drought in the winter they increase rainfall in south asia, africa, and australia. they influence precipitation as wind moves near a mountain.

Which type of organism is a caterpillar