Limiting Factors and Natural Selection

Limiting Factors and Natural Selection

Who gets to survive and thrive?

Multiple Choice

Things in the environment that challenge a species existence. Ex: Over-Population, shortage of food, disease, predators, harsh environmental conditions…

• Adaptation

• Natural Selection

• Genetic Variation

• Limiting Factors

Multiple Choice

What are some abiotic factors that could be limiting factors in the Iowa River ecosystem?

• Temperature, fertilizer runoff from fields, drought or flood

• Invasive species, floods

• Temperature, droughts, floods, over fishing

Multiple Choice

The largest number of organisms that the environment can support.

• Carrying Capacity

• Limiting Factor

Multiple Choice

The gradual change in a species over a long time. It happens because of variations in genetic material that is passed down from parents to offspring

• Evolution

• Natural Selection

• Genetic Variation

• Limiting Factors

Multiple Choice

Organisms that are best suited to an environment will survive and reproduce.

• Evolution

• Natural Selection

• Genetic Variation

• Limiting Factors

Multiple Choice

Birds are the biggest predator in this environment. The black moths had a mutation that made many of them white. What will happen to this species?

• Most of the black moths will survive and the white ones will be eaten

• Most of the white moths will survive and the black ones will be eaten

• The moths will survive equally

• The moths will both equally be eaten by birds

Now it's YOUR turn:

Complete pages 12-15 and 23-27 in your Life Science Booklets