Answer:
A
Explanation:
D is not correct because the atmosphere doesn't expand, C isn't correct because the Sun doesn't heat all the Earth evenly (hence different climates), B is not correct because cold fronts can be singular, so it has to be A
Has to be c
daaaaaaaaaaaaaaaaaaaaaaaaaaaaa
Answer:
gravitational force
Explanation:
Gravitational force is the force responsible for firmness while standing.