Q: Like a blanket on a sleeping person, greenhouse gases act as what for the planet? Choices: - ventilation - plastic - Exterior Coverings - insulation A:
insulation

(Question)
Q: Metalloids, metals, and nonmetals are all classes of what? Choices: - compounds - protons - matter - elements A:
(Answer)
elements

Ques: Q: What planet did the voyager 1 spacecraft visit in 1980? Choices: - venus - mars - jupiter - saturn A:
Ans: saturn

(Q).
Q: In addition to a vibrating electric field what does an electromagnetic wave consist of? Choices: - radiation field - molecular field - gravitational field - magnetic field A:
(A).
magnetic field

Ques:Q: When a lower energy level is ______ electrons are added to the next higher energy level. Choices: - unbalanced - ready - empty - full A:

Ans:full

Ques:Q: Large increases in the diversity of life have resulted from adaptive radiations that followed what? Choices: - mass mutations - mass migrations - glaciers - mass extinctions A:

Ans:
mass extinctions