Exam 23: Ecosystems and Populations

Chemicals that make up living organisms are constantly recycled between organisms and the Earth.

Nutrients cycle most rapidly with the reservoir pool of a biogeochemical cycle and least rapidly with the biomass pool.

Match each term to its definition. -the role of an organism in its community

The rapid growth of the human population still seen today began in the

A biogeochemical cycle involves the cycling of a chemical element between the biomass, exchange pool, and ________.

Succession leads to the establishment of a(n)

Each chemical element cycles between three different pools of the biogeochemical cycle: the exchange pool, biomass, and reservoir. Match each of the following to the pool in which it would be classified. Answers may be used more than once. A) exchange pool B) biomass C) reservoir -a deer eating grass

A population is composed of one or more species of organisms that may interact but do not interbreed.

The majority of precipitation reaching land is derived from evaporation of oceanic waters.

The study of the relationship between living organisms and their physical environment is called ________.

The population of a particular species that an ecosystem can sustain indefinitely is called its

Human population began to rise rapidly following the

Factors in the environment that limit the ability of a species to meet its biotic potential are known as ________ factors.

According to the second law of thermodynamics, when energy is converted from one form to another, some of that energy is transformed into heat energy, which is generally released from the "system."

Excess sugar produced by plants is stored in the form of ________ in cells of their seeds, fruits, or roots.

Which one of the following is TRUE regarding the flow of energy through an ecosystem?

Omnivores differ from carnivores in that omnivores derive their energy from

A progression of population changes that are tied to a region's industrial development and the economic well-being of its citizens is referred to as

Most primary producers are plants that generate simple, high-energy carbohydrates through the process of photosynthesis. This biochemical event essentially captures sunlight and uses the energy to fuel pathways that lead to the production of useful products. How are plants able to capture sunlight to initiate this process?

Organisms that feed on detritus are known as