Ryan Science - Ecology Section

Front 1

Define a population and give 4 factors that affect a population's size

Back 1

Emigration, Immigration, natality, mortality

Front 2

Define emmigration

Back 2

The number of individual moving out of a population

Front 3

Define immigration

Back 3

The number of individual moving into a population

Front 4

Define natality

Back 4

The number of offspring born into a population in a year.

Front 5

Define mortality

Back 5

The number of individuals that die in a population in year.

Front 6

Define population

Back 6

All of the members of a species living in the same ecosystem or habitat.

Front 7

Define photosynthesis

Back 7

The process by which green plants and some other organisms use sunlight energy, CO2 and water to produce carbohydrates and O2.

Front 8

Define respiration

Back 8

The process by which animals use food energy, O2 and water to produce carbohydrates and CO2.

Front 9

Define bio-amplification

Back 9

Process which causes higher toxic levels to be found in the bodies of consumers at each increasing trophic level

Front 10

Define soil

Back 10

The top layer of the earth's surface, consisting of rock and mineral particles mixed with organic matter.

Front 11

Define fertilizer

Back 11

Materials used to restore nutrients and increase plant growth and production.

Front 12

Define pesticides

Back 12

Chemicals designed to kill pests.

Front 13

Define eutrophication

Back 13

Natural eutrophication is the process by which lakes gradually age and become more productive.

Front 14

Define water pollution

Back 14

Changes whether physical or chemical that is introduced to surface water or ground water

Front 15

Dissolved oxygen

Back 15

Essential for life processes of most aquatic organisms

Front 16

Nitrogen and Phosphorus

Back 16

The nutrients nitrogen and phosphorus are essential for plant growth. High concentrations indicate potential for excessive weed and algal growth.