What cloud does cirrus and cumulus make???

They're sometimes called 'mackerel skies' because they can sometimes have a grayish color which makes the clouds look a bit like fish scales. Cirrocumulus clouds exhibit features from both cumulus and cirrus clouds but should not be confused with altocumulus clouds.Explanation:

They're sometimes called 'mackerel skies'

Explanation:because they can sometimes have a grayish color which makes the clouds look a bit like fish scales. Cirrocumulus clouds exhibit features from both cumulus and cirrus clouds but should not be confused with altocumulus clouds.

a compound is a molecule made of atoms from different elements.

a. by the combination of an unlimited number of elements

it's all four options.