SCI 256 final exam all correct answers

7.The crude growth rate is defined as:
8.The nitrogen cycle is one of the most important biogeochemical cycles. However,
molecular nitrogen (N 2 ) in the atmosphere is not a significant element for life because:
9.The case study of Lake Washington in the Environmental Science text illustrates how
phosphorous in the effluent of sewage treatment plants caused an unnatural growth of
algae in the lake. Before the unnatural algae growth, phosphorous was the __________ in
the growth of the algae
10.Which population is most likely to exhibit an evolutionary response to a change in its
environment?
11.A set of interacting species that live in the same area is called a(n):
12.Matter and energy are both always conserved, both in physical systems and biological
systems. This principle is stated in the:
13.Change in the amount of biomass is called:
14.Which of the following refers to lack of a specific chemical component of food:
15.Describe the characteristics of land considered to be marginal for agriculture.
16.When a pest develops resistance to a chemical, all of the following are true except: