What happens in a single-replacement reaction? A. One reactant breaks apart to form new compounds.
O B. One reactant replaces an element in another reactant.
O C. Two reactants combine to form one product.
O D. Two reactants exchange elements with each other.

Evaporation: this is when warmth from the sun causes water from oceans, lakes, streams, ice and soils to rise into the air and turn into water vapour (gas). water vapour droplets join together to make clouds! condensation: this is when water vapour in the air cools down and turns back into liquid water.

You can still be friends with each other. you don't have to date since he likes someone else. just stick to being friends for now

And a) oxygen i believe