Ques: The movement of tectonic plates causes volcanic eruptions, and large volcanic eruptions can decrease (reduce)the earth's average temperature by (a) emitting particles into the stratosphere, thereby increasing the albedo. Given these facts, what effect could more active plate tectonics have on the earth among the following options: - rapid expansion - Decreased precipitation - a tree falling - the production of heat - Lower average temperature - Physical weathering - a lot of human deaths - Plant growth is reduced
Ans: Lower average temperature

Ques: Excretion is the process of removing wastes and excess water from the body, and excretion occurs in the feces. Given these facts, what removes wastes and excess water from the body among the following options: - solutes - vinegar - Balance - ice - blood - air - rivers - feces
Ans: feces

Ques: Light enters the eye through an opening called the pupil, and light enters the eye through the pupil, and the pupil is made larger or smaller by the iris. Given these facts, what makes the pupil change sizes among the following options: - electrically - sun's heat - sweating - It expands - The iris - nerves - environment - heat
Ans: The iris

Ques: Wind causes erosion, and erosion is the physical removal of rock particles. Given these facts, what causes the removal of rock particles among the following options: - Warm air - Sunlight - heat - stream - rain - Wind - Time - rivers
Ans:
Wind