Why does weather vary from day to day?

a. because weather is a complex interaction among many different variables that are constantly changing

b. because cold fronts are always followed by a series of colder fronts, before a warm front returns

c. because the sun's energy heats all parts of the earth evenly but does not heat the atmosphere

d. because the rotation of the earth causes the atmosphere to expand and contract as it nears the sun or moon

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

the answer is c cumulus. cumulus clouds can be seen on a gray and rainy day, because cumulus clouds create thunderstorms. give me brainliest if right.

answer: accepted answer: aquatic animals use the oxygen dissolved in water to carry out respiration. since the amount of dissolved oxygen in water is low as compared to the amount of oxygen in the air, therefore the rate of breathing in aquatic animals is much faster than it is in terrestrial animals.

explanation: