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Living & Nonliving Environments


1. I can identify biotic and abiotic factors in the ecosystem.

2. I can describe the characteristics of populations

3. I can explain the levels of biological organization

Learning Standards:

LS-13:  Give examples of ways in which organisms interact and have different functions within an ecosystem that enable the ecosystem to survive.

LS-16:  Recognize that producers (plants that contain chlorophyll) use the energy from sunlight to make sugars from carbon dioxide and water through a process called photosynthesis.

Main Ideas:

The Biosphere

The part of the earth and its atmosphere that supports all  living organisms and their environments.  The biosphere is made up of all ecosystems on Earth.

Abiotic Factors

All nonliving physical features of the environment that have effects on living organisms.  These include water, soil, light, and temperature.

Biotic Factors

Living or once living organisms in the environment.  Organisms depend on other organisms for food.

Levels of Biological Organization

bio organization


Characteristics of Populations

Populations are characterized by their size, spacing, and population density.

Size:  The size of a population is the number of individual organisms that it contains.  The size of a population is always changing, although some populations can change more rapidly than others.

Spacing:  Refers to how the organisms are arranged in a given area.

Population Density: The size of a population that occupies a space of limited size. 



Bios:  refers to “life”

Ecology:  the study of relationships between organisms and their environments

Biotic Factor:  living or once living organisms in the environment

Abiotic Factor:  all the nonliving physical features of the environment, i.e.:  water, soil, light, temperature, etc

Organism:  a single individual from a population

Population:  all the individuals of one species that live and reproduce in the same area at the same time

Community:  made up of populations of different species that interact in some way

Ecosystem:  made up of communities and all the abiotic factors that affect them

Biosphere:  the highest level of biological organization; made up of all the ecosystems on Earth.

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