Ecosystems

uWhat is an ecosystem? (1)uDescribe the stages involved in primary succession (4)uWhat is the difference between primary and secondary succession? (3)uHow can biomass be calculated? (3)uDescribe the nitrogen cycle (3)uWhat are the three methods of sampling? (3)uDescribe the predator-prey relationship curves (3)uWhat is the difference between conservation and preservation? (3)uHow can ecosystems be conserved? (3)