Concepts Of Biology-Ch.28

Front 1

Ecosystem

Back 1

An array of species and their physical environment.

Front 2

Trophic level

Back 2

All organisms the same number of transfer steps away from the energy input into an ecosystem.

Front 3

Food Chain

Back 3

A linear flow of energy captured by primary producers (autotrophs) into ever higher trophic levels of an ecosystem.

Front 4

Food web

Back 4

Cross-connecting food chains.

Front 5

Biological magnification

Back 5

Some substance becomes more concentrated in body tissues as it moves up through food chains.

Front 6

Biomass/Energy Pyramid

Back 6

Primary producers trap about 1% of the solar energy that enters an ecosystem
Only ~10% is passed on to next level
All Heat in the End
At each trophic level, the bulk of the energy received from the previous level is used in metabolism
This energy is released as heat energy and lost to the ecosystem

Front 7

Herbivore

Back 7

Plant eater

Front 8

Carnivore

Back 8

Meat eater

Front 9

Omnivore

Back 9

Eater of animal,plant, fungi,protist,& bacteria

Front 10

Water Cycle

Back 10

Region from which water drains into a single stream or river.

Front 11

Aquifer

Back 11

Underground layer of rock that contains water (groundwater)

Front 12

Salinization

Back 12

Salt buildup in soil through poor drainage, evaporation, and heavy irrigation.

Front 13

Carbon cycle

Back 13

Movement of carbon from the atmosphere, through food webs and ocean’s waters and rocks, and back to atmosphere.

Front 14

Greenhouse effect

Back 14

Warming of the lower atmosphere as greenhouse gases reradiate heat energy back toward the Earth’s surface.

Front 15

Global Warming

Back 15

Long-term rise in the temperature of the Earth’s lower atmosphere.