Science Vocab Words For Chapter 21

Front 1

Abiotic Factors

Back 1

Nonliving parts of an organisms habitat.

Front 2

Biotic Factors

Back 2

The living parts of a habitat.

Front 3

Organism

Back 3

Living things.

Front 4

Population

Back 4

All the mebers of one species in one area.

Front 5

Community

Back 5

Different populations that live together in an area.

Front 6

Ecosystem

Back 6

The community of an organism that lives in a piticular area, with their nonliving sorrundings.

Front 7

Ecology

Back 7

The study of how living things interact with each other and their enviernment.

Front 8

Ecology

Back 8

Someone who studys an ecosystem.

Front 9

Direct Observation

Back 9

Counting crabs one by one.

Front 10

Indirect Observation

Back 10

One way to determain a cliff swallow is to count their cone-shaped nests.

Front 11

Sampling

Back 11

To estimate the birch tree population in a forest, count the birch trees one by one.Then multiplie to find the number in large areas.

Front 12

Mark and Recapture

Back 12

This resoure is rreleasiing a marked turtle.

Front 13

Immigration

Back 13

Moving into a population.

Front 14

Emigration

Back 14

Leaving a population

Front 15

Niche

Back 15

the role of an organism in its habitat, or how it makes its living.

Front 16

Adaption

Back 16

The behaviors and physicall charateristics that allow organisms to live succesfully in thier envirenment

Front 17

Competition

Back 17

The struggle between organisms to survive as they attempt to use the same limited resources.

Front 18

Perditor

Back 18

The organism that does the killing

Front 19

Prey

Back 19

The organism that is killed.

Front 20

Predation

Back 20

When one organism kills another organism to live.

Front 21

Mutualism

Back 21

Relationship in which both species benifits.

Front 22

Commensalism

Back 22

Relation ship in witch one organism benifits and the other dosen't benifit and is not harmed.

Front 23

Parasitism

Back 23

Involes one organism living inside another harming it that one organism.

Front 24

Parasite

Back 24

The organism that benifits.

Front 25

Host

Back 25

The organism the parasite lives on.

Front 26

Parasitism

Back 26

Involes one organism living on or inside another.

Front 27

Symbosis

Back 27

A close relationship between two species that benifits at least one of the species.

Front 28

Natrual Selection

Back 28

A charactoristic that make an indivisual better sutied to its environment, may eventually become common in that species

Front 29

Carrying Compacity

Back 29

The largest population that an area can support.

Front 30

Limiting Factors

Back 30

An environmental factor that causes a population to decrease.

Front 31

Population Density

Back 31

The number of indivisuals in an area of a specific size.

Front 32

Birth Rate

Back 32

The number of biths in a population in a certian amount of time.

Front 33

Estimate

Back 33

An approximation of a number, based on resenable assumptions.

Front 34

Species

Back 34

A group of organisms that are physically simialler and can mate with each other and produce offspring that can. also mate with each other.

Front 35

Photosynthesis

Back 35

Plant and algee need water and sunlight to produce their own food.

Front 36

Organism

Back 36

Living thing