Which chemical reduces oxygen in the blood, causing a difference between the amount of oxygen the cells need and the amount of oxygen the blood can supply?

The energy required to vaporize a certain amount of a substance is greater than the amount of energy necessary to raise the temperature of the same amout of that substance by 1 degreee celcius

Why does sexual reproduction result in more genetic variation in a species

Hey everybody i need with a biology question. all the gametes of isogamous organisms are genetically identical. true false