17. the net annual primary productivity of a particular wetland ecosystem is found to be 2,000 kcal/m". it respiration
by the aquatic producers is 18,000 kcal/m² per year, what is the gross annual primary productivity for this
ecosystem, in kcal/m² per year?

William poole believes economics should be taught in schools because students will learn

What was the effects of the mass demonstrations of strikes that had immediately followed the economic collapse beginning in 1893?

Which best explains why the number of states in the world increased significantly between 1985 and 1995? the map of southeast asia was redrawn, and new countries were formed. new states were formed when the soviet union collapsed. many african states received independence from their colonizers. communist countries seeking to spread their influence created new satellite states. civil wars in central america fueled the creation of new states.