Ecology: Organisms and Their Environments: You Are Our Density True or False

1.	An organism that has a low risk of dying young will probably have which type of survivorship curve? -> Type I True False
2.	How does nitrogen enter a food chain? -> Bacteria extract it directly from the atmosphere. True False
3.	Food chains and food webs are related in what way? -> Food webs are complexes of multiple food chains. True False
4.	Most of the nitrogen in the world is found in -> the atmosphere. True False
5.	For a species, what is a possible consequence of competitive exclusion? -> The first and second choices True False
6.	The human population size is currently about 7 billion. If the human growth rate decreased from 0.012 to 0.001 today, how many people would be added to the human population next year? -> About 7 million True False
7.	An age pyramid for a country has a small base, bulges in the middle, and has a top that is slightly larger than the base. The country is likely -> developing. True False
8.	What happens to population growth rate as population size approaches the carrying capacity? -> It approaches zero. True False
9.	Density-dependent factors lead to -> negative growth. True False
10.	An energy pyramid for a community would contain which of the following information? -> The number of trophic levels True False

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