Exam 24: Principles of Ecology

Which organism would be found at the top of a lake biomass pyramid? ​

Land ecosystems lose nitrogen to the atmosphere through ____. ​

Wastes would accumulate and most nutrients would stop cycling if which organism(s)within an ecosystem died?

The total energy an ecosytem's producers store in a given amount of time is referred to as____.

Within the nitrogen cycle, which organism both coverts and releases nitrogen? ​

The physical, chemical and biological conditions a species needs to survive and reproduce is a(n)____. ​

Which term describes one or more communities interacting with each other and the physical environment through the flow of energy and cycling of materials? ​

Most atmospheric carbon dissolved in the ocean is in the form of ____. ​

The main storehouse for substances in sedimentary cycles is ____. ​

Match the following letters of a biomass pyramid of a lake with the statements below.  -bacteria and crayfish ​

The most stable array of species in a given area is called a(n)____________________ community. ​

The process in which nitrogenous waste products are decomposed by soil bacteria and fungi releasing NH₃ or NH₄ is ____. ​

What gas makes up the majority of the atmosphere? ​

Herbivores represent ____. ​

Which combination of organisms could be expected to survive in isolation from other forms of life available? ​

Primary productivity is dependent upon all of the following EXCEPT for the ____.

Which plants are planted to increase the amount of nitrogen in the soil?

The graphic representation of energy relationships in an ecosystem is a(n)____.

The major source of water for precipitation onto land is ____. ​