How does competition affect population size?

Question 1

What do organisms compete for?

Answer 1

Things they need to survive and reproduce?

Question 2

What do animals compete for?

Answer 2

-Food
-Water
-Space (territory)
-Mates

Question 3

What do plants compete for?

Answer 3

-Space so they get sufficient light,water and mineral ions

Question 4

What are the 2 types of competition?

Answer 4

Intraspecific and Interspecific

Question 5

What is Intraspecific competition?

Answer 5

Where organisms compete with other organisms of the same species for things like food and territory

Question 6

What does Intraspecific competition cause?

Answer 6

A cyclical change in population size for K-Strategies

Question 7

What is Interspecific variation?

Answer 7

Organisms compete with organisms of different species

Question 8

What 2 things will happen when resources become limiting?

Answer 8

-population size of each species competing for a resource decreases
-if one species is better adapted to the environment, it will outcompete the other species

Question 9

How does predation affect population size?

Answer 9

In a stable community, the population size of predators and prey rise and fall in a negative feedback cycle

Question 10

What happens step by step in a Predator-Prey Cycle using foxes and rabbits as an example.

Answer 10

1)Not many foxes so the number of rabbits increases
2)There is more food (rabbits) for foxes so the number of foxes increases
3)numbers of rabbits decrease as lots of foxes eat them
4)number of foxes decreases as less rabbits eat

Question 11

What do we rely on ecosystems for?

Answer 11

To provide us with the resources we need to survive

Question 12

Give examples of ecosystems that we rely on and what for.

Answer 12

-Rain-forests for fuel,food medicine and clothes
-Oceans provide many foods
-Both of the above provide most of our oxygen

Question 13

What is the issue with these resources that are provided to us?

Answer 13

We are using them up too quickly.damaging the ecosystems and reducing biodiversity

Question 14

What do we need to do about this?

Answer 14

Find ways to obtain resources in a sustainable way while causing the least amount of damage

Question 15

Define Conservation.

Answer 15

The protection, management and restoration of ecosystems so natural resources can be used without them running out

Question 16

Define Preservation.

Answer 16

The protection of ecosystems so they are kept exactly as they are

Question 17

What is the first reason why conservation is important?

Answer 17

Economic reasons

Question 18

Why are economic reasons important?

Answer 18

Many resources are traded locally and globally and if they run out, there will be less trade and more poverty in the future

Question 19

What is the second reason why conservation is important?

Answer 19

For social reasons

Question 20

Why are social reasons important?

Answer 20

Many ecosystems bring joy to lots of people so if these are lost,future generation won’t be able to enjoy them

Question 21

What is the third reason why conservation is important?

Answer 21

For ecological reasons

Question 22

Why are ecological reasons important?

Answer 22

Deforestation is causing global warming and the destruction of habitats is reducing biodiversity

Question 23

What is the fourth reason why conservation is important?

Answer 23

For Ethical Reasons

Question 24

Why are ethical reasons important?

Answer 24

Many people think that conserving ecosystems is the right thing to do