Ecosystem

Question 1

population

Answer 1

all the organisms of one species in an ecosystem at a certain time

Question 2

community

Answer 2

population of all species in an ecosystem at a certain time

Question 3

ecosystem

Answer 3

the community and physical environment that is present

Question 4

habitat

Answer 4

the place an organism lives

Question 5

biotic factor

Answer 5

living components of an ecosystem

Question 6

abiotic factor

Answer 6

non living components of an ecosystem

Question 7

producers

Answer 7

plants that photosynthesise to make their own food

Question 8

consumers

Answer 8

animals that eat plants or other animals

Question 9

decomposers

Answer 9

organisms that break down dead material

Question 10

Biodiversity

Answer 10

the variety and abundance (number) of a species in a certain area

Question 11

Keystone species

Answer 11

a species whose removal from an ecosystem will result in the drastic change or collapse of the ecosystem (e.g bees)

Question 12

How is energy lost in ecosystems

Answer 12

heat/ respiration
not all organic matter is digested
energy in faeces
not all organism is eaten (bone)
excreted in urine
movement

Question 13

what is eutrophication

Answer 13

when fertilisers are washed off from land in nearby rivers and lakes by the ran