Ecosystems

Question 1

Abiotic

Answer 1

( non living )

Physical and chemical components that effect an environment

E.g

Availability of light
Availability of oxygen
Salt concentration

Question 2

Biotic

Answer 2

( living)

All living organisms
Their numbers, distribution and interactions

E.g

Snake
Predictor

Question 3

Trophic levels in food chains

Answer 3

Tertiary consumer ( crocodile )

Secondary consumer ( wild dogs)

Primary consumer ( cassowary )

Producer ( gum tree )

Question 4

Trophic levels in food webs

Answer 4

Third order consumer ( lion - there’s one)

Second order consumers ( hyena )

First order consumers ( dear, cow, zebra )

Producer ( grass )

Question 5

Competition

Answer 5

Competing for resources

Question 6

Mutualism

Answer 6

Interactions that benefit both

E.g plover and croc

Question 7

Parastion

Answer 7

When one organism ( parasite ) lives on another organism ( host ) and causes Harm

E.g tick on dog

Question 8

Commensalism

Answer 8

When one organism lives on another and has no effect

E.g clown fish and anemone

Question 9

Ecosystem

Answer 9

An ecosystem is the result of the interactions between the abiotic and biotic factors of an environment