Any help would be much appreciated, i'm being timed :( i'll mark brainliest and 5 star

Reaction rate depends on how many molecules are coming into contact with each other with enough energy to react. increasing the temperature of the reactants will increase -

Which substance is a steroid? cholesterol fatty acid monosaccharide trans fat

How does the atmosphere to make earth livable? check all that apply. causes the seasons contains oxygen provides warmth creates important nutrients blocks harmful energy from the sun plz like !