human influences on ecosystems

Question 1

fossilisation

Answer 1

the process of becoming a fossil

Question 2

combustion

Answer 2

a chemical process in which a substance reacts rapidly with oxygen and gives off heat (Burning)

Question 3

deforestation

Answer 3

the purposeful clearing of forested land (cutting down trees)

Question 4

leaching

Answer 4

a mass transfer process which takes place through the extraction of a substance from a solid material that has come into contact with the liquid

Question 5

eutrophication

Answer 5

occurs when the environment becomes enriched with nutrients

Question 6

biomagnification

Answer 6

the increase in concentration up the food chain

Question 7

bioaccumulation

Answer 7

chemicals not breaking down in living organisms, so they build up in a living organism

Question 8

pesticides

Answer 8

poisonous chemicals which kill pests

Question 9

insecticides and herbicides

Answer 9

a type of pesticide that is used to specifically target and kill insects

Question 10

carbon cycle

Answer 10

where carbon goes and how e.g. combustion adds carbon to the atmosphere