Bio 2

Question 1

Climax Community

Answer 1

a stable mature community in a successive series which has reached equilibrium after having evolved through stages and adapted to its environment

Question 2

Pioneer species

Answer 2

Pioneer species are hardy species which are the first to colonize previously disrupted or damaged ecosystems, beginning a chain of ecological succession that ultimately leads to a more biodiverse steady-state ecosystem.

Question 3

Disturbance

Answer 3

disturbance is a temporary change in environmental conditions that causes a pronounced change in an ecosystem

Question 4

Stability

Answer 4

Ecosystem stability is an important corollary of sustainability. Over time, the structure and function of a healthy ecosystem should remain relatively stable, even in the face of disturbance. If a stress or disturbance does alter the ecosystem is should be able to bounce back quickly.

Question 5

Density Independent

Answer 5

density-independent factor Any factor limiting the size of a population whose effect is not dependent on the number of individuals in the population. An example of such a factor is an earthquake, which will kill all members of the population regardless of whether the population is small or large.

Question 6

Density Dependent

Answer 6

density-dependent factor Any factor limiting the size of a population whose effect is dependent on the number of individuals in the population. For example, disease will have a greater effect in limiting the growth of a large population, since overcrowding facilitates its spread.

Question 7

Population Density

Answer 7

Population density (in agriculture : standing stock and standing crop) is a measurement of population per unit area or unit volume; it is a quantity of type number density. It is frequently applied to living organisms, and particularly to humans. It is a key geographic term.

Question 8

Population

Answer 8

A population is a summation of all the organisms of the same group or species, which live in a particular geographical area, and have the capability of interbreeding.

Question 9

Primary Succession

Answer 9

A population is a summation of all the organisms of the same group or species, which live in a particular geographical area, and have the capability of interbreeding.

Question 10

Inbreeding

Answer 10

breed from closely related people or animals, especially over many generations.

Question 11

Dispersion

Answer 11

the action or process of distributing things or people over a wide area.

Question 12

Life Expectancy

Answer 12

The age you expect to live by

Question 13

Immigration

Answer 13

Organisms moving into an area

Question 14

Emigration

Answer 14

Organisms moving out of an area

Question 15

Birth rate

Answer 15

Rate of births

Question 16

Ecological Succession

Answer 16

Ecological succession is the observed process of change in the species structure of an ecological community over time. The time scale can be decades (for example, after a wildfire), or even millions of years after a mass extinction.

Question 17

Growth Rate

Answer 17

The amount of increase that a specific variable has gained within a specific period and context

Question 18

Agricultural Rev.

Answer 18

An agricultural revolution or agrarian revolution is a period of transition from the pre-agricultural period characterized by a Paleolithic diet, into an agricultural period characterized by a diet of cultivated foods; or a further transition from a living a more advanced and more productive form of agriculture, …

Question 19

Hunter Gatherer Lifestyle

Answer 19

A hunter-gatherer or early human society is one in which most or all food is obtained from wild plants and animals, in contrast to agricultural societies, which rely mainly on domesticated species.

Question 20

Death Rate

Answer 20

Mortality rate, or death rate, is a measure of the number of deaths (in general, or due to a specific cause) in a particular population, scaled to the size of that population, per unit of time.

Question 21

Secondary Succession

Answer 21

Secondary succession is the series of community changes which take place on a previously colonized, but disturbed or damaged habitat