Hydrogen has two atoms in water, and there is one atom of oxygen in water
<span>Enzymes and antibodies are functional proteins. the second one is the answer</span>
Assuming this is multiple choice, the answer would be "niche". An organism's niche is where that certain organism fits into an ecosystem, or what their part to play is.
Struggled with this earlier but because of the high altitude only some animals can live there and thrive because of the lower oxygen levels
3.13 x 10 ^9
This is because only 1 number is front of the decimal and 2 numbers should be after
