Page 181 - Science Course 3 (Book 1)

Mo4-L7a: How is an Ecosystem Different From a Biome?

Abiotic Factors

Abiotic factors are the nonliving parts of an
ecosystem.

Important abiotic factors include water, light,
temperature, atmosphere, and soil.

The types and amounts of abiotic factors in an
ecosystem help to determine which organisms can
live there.

Abiotic Factor Biotic Factor

Events(Strom, Flood, Fire) Food Webs

Moisture Competition
Ecosystem
Nutrients Species diversity
Biotic Factors
Light Population numbers Biotic factors are all of the living or once-living
things in an ecosystem.
Temperature Biomass and Productivity A community is all the populations that live
together in the same place.

All organisms need water to live, but some need A population is made up of all the members of
more water than others. one species that live in an area.

The amount of light available and the temperature of Organisms in a population interact and compete
an ecosystem can also determine which organisms for food, shelter, and mates.
can live there.

Different ecosystems contain different amounts and
types of nutrients, minerals, and rocks in the soil.

Sunlight Wind

Rain

Soil
Water

Very few living things can survive in an ecosystem
without oxygen in the atmosphere.

173