(Q).
Phase changes do not change mass, and melting is a phase change. Given these facts, what happening to something will not change its mass among the following options: - growing - Dilution - energy - doubling - melting - It expands - Energy. - shrinking
(A).
melting

(Q).
Unequal heating of Earth 's surface by the Sun causes global wind patterns, and finally, the pattern of tropical wind and ocean circulation is a key element of global circulation. Given these facts, unequal heating of the Earth's surface by the Sun causes ocean circulation and what among the following options: - Energy. - climate - raincoats - The atmosphere - tropical wind - freezing rain - pouring down - to move people
(A).
tropical wind

(Q).
Threatening behavior by predators causes a porcupine to extend its quills, and fishers are predators that can eat porcupines. Given these facts, what might a porcupine do if threatened by a fisher among the following options: - dig in the dirt - Decrease bodily water - killing insects - lower its quills - kill them - humans disturb it - show its teeth - show its quills
(A).
show its quills