4.7.2.4 Impact of Environmental Change

Question 1

What do environmental changes affect?

Answer 1

• distribution of species in an ecosystem

Question 2

What environmental changes affect the distribution of species?

Answer 2

• temperature
• water availability
• atmospheric gas composition

Question 3

How can temperature affect the distribution of species?

Answer 3

• climate change may lead to insects migrating to places in the world which are becoming hotter

Question 4

How can water availability affect the distribution of species?

Answer 4

• populations will migrate to find water

Question 5

How can atmospheric gas composition affect the distribution of species?

Answer 5

• certain pollutants can affect the distribution of organisms
• e.g. lichen cannot grow in places where sulfur dioxide is present

Question 6

How can the changes occur?

Answer 6

• seasonal
• geographic
• caused by human interaction