Competition and Environmental Change Flashcards
Organisms compete for r_________ to live and breed
resources
Which resources do plants need to survive?
Light
Space
Water
Nutrients from soil
Which resources do animals need to survive?
Space (territory)
Food
Mates
If animals or plants both need the same resources they will…
compete
The environment can be changed by 2 groups of factors. These are:
Living factors
Non-living factors
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
The following non-living factors can change an environment:
Increase or decrease in temperature
Increase or decrease in rainfall
What is the effect of more infectious disease on a population?
population decreases
What is the effect of more predators on a population of prey?
less prey as they are all eaten
What is the effect of more prey on a population of predators?
more predators as more food
What is the effect of less prey on a population of predators?
less predators as less food
The number of bees is falling in the U.S.A. This could be because of…
Less food available
More disease
Pesticides harming bees
What is meant by the distribution of a species?
How the species is spread across an area.
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.
