Environmental Change and Species Distribution Flashcards

1️⃣ Familiarise yourself with the flashcards:

  • Look through all the flashcards to see what's on both sides.
  • Make sure you understand the information on each card. If something's unclear, click the link to the revision notes at the bottom of the page for more details.

2️⃣ Test yourself:

  • Look at the question or prompt on each card and try to remember the answer before flipping it over.
  • Check the answer and make a note of any cards you find challenging and need to go over more.

3️⃣ Consistently Review and Practice:

  • Use spaced repetition: spend more time on the cards you struggle with and go over them more often.
  • Regularly review all the flashcards to help you better understand and retain the information over time.

Note: We may include questions that have multiple correct answers. It's useful to remember specific examples to understand these concepts better.

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What is meant by the distribution of a species?

It means where a species is found in the world or in a habitat, and where it is not found.

What is environmental change?

Environmental change is any change in the conditions of a habitat, such as temperature, water or gas levels.

Name three types of environmental change that can affect species distribution.

Environmental change can be seasonal, geographic (natural changes in different places), or caused by human activity.

How can a change in temperature affect a species’ distribution?

If an area becomes too hot or too cold, a species may move to a new area, die out in that area, or fail to breed there.

How can a change in water availability affect where species live?

If an area becomes drier or wetter, some species can no longer survive there and may move away or die, while others may move in.

How can a change in atmospheric gases affect species distribution?

Changes in gases like oxygen and carbon dioxide can make it harder for some organisms to breathe or photosynthesise, so they may die out or move to new areas.

What might happen to a species if it cannot move when its environment changes?

Its numbers may drop in that area and it may become locally extinct, or even fully extinct if this happens everywhere.

Why might some species spread into new areas when the climate becomes warmer?

Places that were once too cold for them may now have suitable conditions, so they can survive and breed there.

Give one example of a human activity that can change species distribution and explain how.

Deforestation removes trees and changes light and moisture levels, so woodland species may leave and other species may move in.

How can changes in migration patterns show that species distribution is changing?

If animals start to migrate at different times or to new places, it shows that the areas where they can survive have changed.

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