Earth's Systems

Question 1

System

Answer 1

describes the relation between several working elements or units.

Question 2

feedback

Answer 2

· the process of returning part of the output of a circuit, system, or device to the input

Question 3

model

Answer 3

A systematic description of an object or phenomenon that shares important characteristics

Question 4

Biosphere

Answer 4

global ecological system integrating all living beings and their relationships

Question 5

Ecosystem

Answer 5

a system, or a group of interconnected elements, formed by the interaction of a community of organisms with their environment

Question 6

Biome

Answer 6

is a biogeographical unit consisting of a biological community that has formed in response to a shared regional climate.

Question 7

Organism

Answer 7

is any organic, living system that functions as an individual entity.

Question 8

Population

Answer 8

all the individuals of one species in a given area.

Question 9

Biotic Factor

Answer 9

a living thing, as an animal or plant, that influences or affects an ecosystem:

Question 10

Abiotic Factor

Answer 10

a nonliving condition or thing, as climate or habitat, that influences or affects an ecosystem and the organisms in it:

Question 11

Community

Answer 11

an assemblage of interacting populations occupying a given area.

Question 12

Habitat

Answer 12

the natural environment of an organism; place that is natural for the life and growth of an organism:

Question 13

Niche

Answer 13

the position or function of an organism in a community of plants and animals.

Question 14

Biodiversity

Answer 14

the variety of life in the world or in a particular habitat or ecosystem.

Question 15

Keystone Species

Answer 15

A species whose presence and role within an ecosystem has a disproportionate effect on other organisms within the system.

Question 16

exponential growth

Answer 16

is the rapid growth in relation to the growing total number with the passage of time.

Question 17

Resilence

Answer 17

the capacity to recover quickly from difficulties;

Question 18

logistic growth

Answer 18

Logistic growth is population increase that happens in a manner that starts slowly, as there are few individuals, then increases in speed as numbers increase, but then decreases when the ecosystem reaches its carrying capacity

Question 19

carrying capacity

Answer 19

the number or quantity of living things that can be supported by the environment

Question 20

density-dependent limiting factor

Answer 20

any factor that affects the size of a population of living things in response to the number of individuals per unit area

Question 21

density independent limiting factor

Answer 21

Any factor that affects the size of a population of living things that DOES NOT depend on the number of individuals per unit area

Question 22

population density

Answer 22

a measurement of population per unit land area.

Question 23

emigration

Answer 23

individuals leaving a population

Question 24

Immigration

Answer 24

individuals entering a population

Question 25

Resistance

Answer 25

the inherent ability of an environment to resist harmful influences

Question 26

Ecological Succession

Answer 26

the process by which the mix of species and habitat in an area changes over time.

Question 27

stability

Answer 27

maintaining a natural balance

Question 28

urbanization

Answer 28

the process of making an area more urban (cities)

Question 29

genetic diversity

Answer 29

genetic variability present within species

Question 30

climax community

Answer 30

the final stage of succession, remaining relatively unchanged until destroyed by an event such as fire or human interference

Question 31

disturbance

Answer 31

an event or force that brings about death to organisms and changes in the ecosystems they inhabit

Question 32

population growth rate

Answer 32

the percent of change of a population over time (either negative or positive)