10.1 4 The effect of biotic factors on populations

Question 1

Relationship between predators and prey populations

Answer 1

Populations will oscillate in a repeating cycle

Question 2

Finding a mate

Answer 2

Availability of mates has a big effect on the abundance of any type of animal in seas

Question 3

Territory

Answer 3

An area held and defended by an animal or group of animals against other organisms
Usually makes sure breeding pair has sufficient resources to raise the young

Question 4

Parasitism and disease

Answer 4

Diseased animals will be weakens and often do not reproduce successfully
Sick predators cannot hunt well
Parasite can be wiped out
Disease spreads more rapidly when there is a high population density