Q: When do weather balloons return to earth? Choices: - when the air heats up - when the timer runs out - when the air cools - when it bursts A:
when it bursts

(Question)
Q: What controls the shape of a developing zygote early in its development? Choices: - chromosomes - storage genes - DNA - gap genes A:
(Answer)
gap genes

Ques: Q: What do you call the process of a solid becoming a liquid? Choices: - boiling - vaporizing - freezing - melting A:
Ans: melting

(Q).
Q: A wave that consists of vibrating electric and magnetic fields is called what? Choices: - mechanical wave - thermal wave - propagate wave - electromagnetic wave A:
(A).
electromagnetic wave

Ques:Q: What term describes the number and kinds of species in a location or on the planet? Choices: - habitat - Allopatric speciation - ecosystem - biodiversity A:

Ans:biodiversity

Q: When populations get close to the carrying capacity, what happens to growth? Choices: - halts - dies - spikes - slows A:
slows