Populations and Resources

An ecosystem is made up of ______ .

• living things and their offspring

• nonliving things such as rocks and soil

• living things and nonliving things

• many types of animals

Tags

NGSS.MS-LS2-3

What is the best definition of an organism?

• Many individuals of the same species living in the same area.

• All of the living and nonliving things in a particular area.

• An individual plant, animal, fungus, or single-celled life form.

• A creature that is large enough to see without using a microscope.

Which picture accurately shows a "population"?

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Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

What is a scientific word that refers to new organisms being made?

• Reproduce

• Renovate

• Expire

• Subsist

Tags

NGSS.MS-LS3-2

Within a population, organisms are always…

• eating and sleeping.

• being born and growing up.

• being born and dying.

• dying of old age and eating other things.

What causes a population size to increase?

• The number of births is greater than the number of deaths.

• The number of deaths is greater than the number of births.

• The number of births and the number of deaths is equal.

What causes a population size to decrease?

• The number of births is greater than the number of deaths.

• The number of deaths is greater than the number of births.

• The number of births and the number of deaths is equal.

Tags

NGSS.MS-LS2-4

If the population size stays stable, does this mean that no organisms have been born or died?

• Yes, because if organisms were born or died that would change the number of organisms in the population.

• No, because if some organisms are born and the same number of organisms die, then the total population size can stay constant.

• Yes, because some organisms never die, so they don't need to reproduce.

• No, because all organisms will give birth and then die.

Based on this graph, what must be true about the US honeybee population?

• There are more births than deaths occurring.

• There are more deaths than births occurring.

• There is an equal number of deaths and births occurring.

• People don't like honeybees.

Tags

NGSS.MS-LS2-4

When something remains mostly the same over time it is said to have....?

• Uneventful

• Potential Energy

• Stability

• Boring