Organisms that need nitrogen to survive are all living organisms.
only animals.
only bacteria.
only plants.

To calculate the molarity of a solution, you need to know the moles of solute and the

A250 g sample of water with an initial temperatureof 98.8 closes 6500 joules of heat. what is the finaltemperature of the water?

If this sedimentary rock layer is truly the oldest one of marine origin, what do you think that tells usabout the formation of earth's oceans?