Limiting Factors

Which of the following is an important part of the pond's ecosystem, but cannot be seen in the picture above?

• microorganisms

• vegetation

• biotic factors

• abiotic factors

What are the limiting factors in an ecosystem?

• food, shelter, space and clothing

• food, water, space and shelter

• shelter, carpet, water and space

• shelter, water, clothing and space

Tags

NGSS.MS-LS2-1

In a forest region of the Rocky Mountains, a population of wolves increases as the population of deer increases. Then a period of drought causes the plants to die and the deer population begins to decrease. What will happen to the wolf population?

• The population will disappear.

• The population will increase.

• The population will decrease

• The population will stay the same.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which situation below shows the effects of a limiting factor within an ecosystem?

• A lake dries up and all of the animal populations increase.

• The population of dragonflies increases as the frog population increases.

• All the mice and rats in a field disappear and the snake population increases.

• Most of the nut-producing trees in a forest die and the squirrel population decreases.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which of the following is true for both aquatic and terrestrial ecosystems?

• Both are warm year-round.

• Trees are producers in both

• Plankton are producers in both.

• Biotic and abiotic factors interact with each other.

Tags

NGSS.MS-LS2-2