Short-Term & Long-Term Environmental Changes

Short-Term & Long-Term Environmental Changes

8.11B --> I Will explore how short and long term environmental changes affect organisms and traits in subsequent populations.

Multiple Choice

Which of the following is NOT an abiotic factor?

• Sun

• Soil

• Temperature

• Grass

Multiple Choice

What is the main difference between Primary and Secondary Succession?

• Primary comes first and Secondary comes after.

• Primary succession has soil present and Secondary does not.

• Secondary succession takes longer to reach a climax community because it does not have soil; it starts off with bare rock.

• Primary succession takes longer to reach a climax community because it does not have soil; it starts off with bare rock.

Multiple Choice

What is an example of a pioneer species?

• Moss and shrubs; they grow on rock and break it down.

• Shrubs and small trees; they grow on rock and break it down.

• Moss and Lichen; they grow on rock and break it down

Multiple Choice

What is the purpose of a pioneer species?

• To populate the rest of the forest after a fire.

• To grow on rock, break it down, and to eventually create soil from the broken up rock material.

Multiple Choice

Is the following a short term or long term environmental change: an Ice Age

• Short Term

• Long Term

Multiple Choice

Is the following a short term or long term environmental change:

wildfire

• Short Term

• Long Term

Multiple Choice

Is the following a short term or long term environmental change: Urbanization

• Short Term

• Long Term

Multiple Choice

Is the following a short term or long term environmental change:

blizzard

• Short Term

• Long Term

Multiple Choice

How would beavers building a dam cause an increase in the fish population? The dam --

• blocks a river and creates a lake.

• forces many birds to leave the ecosystem.

• causes predators to hunt more fish.

• removes trees from around the river.

Multiple Choice

An organism that cannot adapt to changes in the environment will most likely --

• produce more offspring

• change its traits to survive

• die

• store more food

Open Ended

EXIT TICKET: In 1-3 complete sentences, explain your answer.

Lions and cheetahs hunt wildebeests that graze in the grasslands of Africa. What likely effect would increased rainfall over several rainy months have over the population of lions, cheetahs, and wildebeests?

(THINK: would one inrease and the other decrease? would they both?)