LIVING THINGS AND THE ENVIRONMENT

Created by Ellen Dugan

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15 slides

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Suppose there were a group of prairie dogs living on the Nebraska plains. You watch them burrow into the into the ground to avoid a circling hawk.

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ECOSYSTEMWRITE THIS DOWN:
AN ECOSYSTEM IS ALL THE LIVING AND NONLIVING THINGS THAT INTERACT IN A PARTICULAR AREA.

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A prairie dog can obtain food, water, shelter, and other things that it needs to live, grow and reproduces from its surroundings.

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HABITATWRITE THIS DOWN:
A habitat is the place where an organism obtains food, water, shelter, and other things it needs to live, grow, and reproduce.

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LET'S WATCH THIS VIDEO AND SEE WHAT YOU REMEMBER.

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THE DIFFERENCE BETWEEN ABIOTIC AND BIOTIC FACTORS

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BIOTIC FACTORSWRITE THIS DOWN:

BIOTIC FACTORS - THE LIVING PARTS OF AN ECOSYSTEM

REMEMBER THAT BIO means LIFE

Biography - writings about someone's life; Biology - the study of life

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ABIOTIC FACTORS

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ABIOTIC FACTORSWRITE THIS DOWN:

Abiotic factors are the nonliving parts of an ecosystem.

In some cases the prefix "a" means "not" such as:
apolitical means "not political"
abiotic means "not living"

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POPULATIONS

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POPULATIONWRITE THIS DOWN:

ALL THE MEMBERS OF ONE SPECIES IN A PARTICULAR AREA ARE REFERRED TO AS A POPULATION.

You don't have to write this: All the prairie dogs on those Nebraska plains are a population. All the daisies in a field are a population. However, all the trees in a forest are NOT a population unless they are the same species (such as oak trees).

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COMMUNITY

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COMMUNITYWRITE THIS DOWN:
A COMMUNITY IS ALL THE DIFFERENT POPULATIONS THAT LIVE TOGETHER IN AN AREA.

You don't have to write this: For example, in a prairie the community could be all the prairie dogs, the hawks, the grass, the snakes, ferrets, and owls.

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Levels of Organization in an EcosystemThe smallest unit of organization is a single organism, then a population, then a community, and finally the ecosystem which includes abiotic factors such as sunlight, water, and soil.

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ECOLOGYWRITE THIS DOWN:
ECOLOGY - THE STUDY OF HOW LIVING THINGS INTERACT WITH EACH OTHER AND THEIR ENVIRONMENT
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