Choose all the right answers. How do bacteria help the nitrogen cycle?

They release nitrogen in the air.
Bacteria build plant protein.
They make nitrogen chemicals which plants can use.
Bacteria help to release chemicals from dead plants and animals.

An easy way to calculate the amount of energy available at each level is to what?

Looking at this image, what relationship can be drawn from it? the lower the degree of latitude, the lower the degree of temperature there is no relationship between latitude and temperature the higher the degree of latitude, the higher the degree of temperature the lower the degree of latitude, the higher the degree of temperature

Which hormone is used by both males and female?