Ecology: Biotic and Abiotic Factors>

Question 1

What are the biotic factors?

Answer 1

= AValiablilty of food.
= Arrival of a new predator.
= Competition.
= Arrival of new pathogen.

Question 2

What is the first biotic factor?

Answer 2

• Avaliability of food.
• ## Falls: Number of animals in community falls.

Question 3

What is the second biotic factor?

Answer 3

• Arrival of a new predator.
• Cause population of a prey species to fall.
• Affect existing predators E;g: Competing for same prey.

Question 4

What is the third biotic factor?

Answer 4

Competition.
- if a species is outcompeted the population can fall and numbers are no sufficient to breed and the species can become extinct.

Question 5

What is the final biotic factor?

Answer 5

• New Pathogens.

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Question 6

What are the abiotic factors?

Answer 6

= Light intensity.
= Temperature.
= PH and mineral of soil.
= Wind.
= Co2 and o2 concentration levels.

Question 7

What is the first abiotic factor?

Answer 7

• Light intensity.
• Plants need light for photosynthesis or they will grow slowly.
• ## If plants grow more slowly animals which feed on these plants won’t have enough food.

Question 8

What is the second abiotic factor?

Answer 8

• Temperature.
• Cause distribution of species to change.
  E.g: Animals could migrate + Plant species may dissapear.

Question 9

What is the third abiotic factor?

Answer 9

= PH and mineral of the soil.
= plants cannot grow in soil that is to alkali and acidic.
= Plants need certain minerals to grow.

Question 10

What is the fourth abiotic factor?

Answer 10

=Wind.

=

Question 11

What is the fith abiotic factor?

Answer 11

= Co2 and oxygen concentration.
= Photosynthesis.
= Respiration.