Question: Which of the following formulas provides the proper definition of net primary production? NPP = G…

Which of the following formulas provides the proper definition
of net primary production?

NPP = GPP + Ra

NPP = GPP – Ra

NPP = Ra – GPP

NPP = GPP/Ra

. Which of the following statements about ecosystems are
true?

Check all that apply:

An ecosystem is a dynamic, interacting, interrelated set of
biotic and abiotic components found in a particular location.Energy
flows through ecosystems while materials tend to cycle within
them.Ecosystems can be very large or very small.. What is an
Ecological Footprint?

The area of land a population occupies

.The area of land a population requires to gather the resources
it uses, including fossil fuels, and to assimilate all of its
waste.

The area of land needed to sustainably produce all of the
resources a population uses and to assimilate all of its waste.