Evaporation means:

1. evaporation process by which liquid water changes into a gas
2. infiltration the release of water from the atmosphere
3. precipitation release of water vapor into the air by plants
4. sublimation process by which solid water (ice, snow) changes directly into a gas
5. transpiration process by which precipitation soaks into the ground

an adaptation is a change or process by which an organism takes to be better suited for its environment. for example; migration is a behavioral adaptation, this is needed because birds are not built to last extremely cold climates. there are different adaptations because there are different species needing to adjust to different things, bears don't migrate; they hibernate.

true is the answer : )

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds