Competition and Environmental Change Flashcards Preview

z - AQA GCSE Core Biology - Old spec > Competition and Environmental Change > Flashcards

Flashcards in Competition and Environmental Change Deck (14)
Loading flashcards...
1

Organisms compete for r_________ to live and breed

resources

2

Which resources do plants need to survive?

Light
Space
Water
Nutrients from soil

3

Which resources do animals need to survive?

Space (territory)
Food
Mates

4

If animals or plants both need the same resources they will...

compete

5

The environment can be changed by 2 groups of factors. These are:

Living factors
Non-living factors

6

The following living factors can change an environment:

More or less infectious diseases
More or less predators
More or less food
More or less competition

7

The following non-living factors can change an environment:

Increase or decrease in temperature
Increase or decrease in rainfall

8

What is the effect of more infectious disease on a population?

population decreases

9

What is the effect of more predators on a population of prey?

less prey as they are all eaten

10

What is the effect of more prey on a population of predators?

more predators as more food

11

What is the effect of less prey on a population of predators?

less predators as less food

12

The number of bees is falling in the U.S.A. This could be because of...

Less food available
More disease
Pesticides harming bees

13

What is meant by the distribution of a species?

How the species is spread across an area.

14

Give an example of how a non living factor has resulted in an animal changing its distribution.

Warmer winters in U.K due to global warming have meant Black caps are staying in U.K over winter instead of migrating South.