Finals Study Guide Flashcards
(22 cards)
Energy pyramid
An energy pyramid is a graphical model of energy flow in a community. The different levels represent different groups of organisms that might compose a food chain.
Food web
a system of interlocking and interdependent food chains.
Consumer
Consumer is a thing that makes it own food
Ecology
the branch of biology that deals with the relations of organisms to one another and to their physical surroundings.
Water cycle
he cycle of processes by which water circulates between the earth’s oceans, atmosphere, and land, involving precipitation as rain and snow, drainage in streams and rivers, and return to the atmosphere by evaporation and transpiration.
Biotic factors
Biotic factors are the living components of an ecosystem. They are sorted into three groups: producers or autotrophs, consumers or heterotrophs, and decomposers or detritivores.
Predator
an animal that naturally preys on others.
“wolves are major predators of rodents”
Food chain
a hierarchical series of organisms each dependent on the next as a source of food.
Producers
a person, company, or country that makes, grows, or supplies goods or commodities for sale.
Biome
a large naturally occurring community of flora and fauna occupying a major habitat, e.g., forest or tundra.
Nitrogen cycle
the series of processes by which nitrogen and its compounds are interconverted in the environment and in living organisms, including nitrogen fixation and decomposition.
Carbon cycle
the series of processes by which carbon compounds are interconverted in the environment, chiefly involving the incorporation of carbon dioxide into living tissue by photosynthesis and its return to the atmosphere through respiration, the decay of dead organisms, and the burning of fossil fuels.
Abiotic
the nonliving elements of an ecosystem are called abiotic factors for example temperature wind altitude. soil gases. nutrients living organisms of an ecosystem are called biotic factors for example humans plants animals bacteria abiotic. … it will affect the entire ecosystem.
Prey
an animal that is hunted and killed by another for food.
Level of organisms
The orgasm is widely regarded as the peak of sexual excitement. … Orgasms have multiple potential health benefits due to the hormones and other chemicals that are released by the body during an orgasm.
Succession
a number of people or things sharing a specified characteristic and following one after the other.
Lab safety rules
Laboratory safety. … In some cases, laboratory activities can also present environmental health risks, for example, the accidental or deliberate discharge of toxic or infective material from the laboratory into the environment.
Metric system
A decimal system of weights and measures based on the meter as a unit of length, the kilogram as a unit of mass, and the liter as a unit of volume.
Independent variable
whose variation does not depend on that of another.
Dependent variable
whose value depends on that of another.
Constants variable
Some people refer to controlled variables as “constant variables.” In the best experiments, the scientist must be able to measure the values for each variable. Weight or mass is an example of a variable that is very easy to measure.
Hypothesis
a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation.
