Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Ecology 9 > Natural + Human Impacts on the Environment > Flashcards

Natural + Human Impacts on the Environment Flashcards

1
Q

What causes bushfires ?(Natural impacts)

A

heat/loghtning strike
accidently lit
on purpose

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is the positive effect of bush fires (natural)

A

promotes germination because plants adapt to survive and benefit from fire. some plants - banksias + hakeas - need fire to grow

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the negative effect of bush fires (natural)

A

destructs animals/plants/towns and people

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What causes drought?(Natural impacts)

A

lack of rainfall to no rain

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is the negative effect of drought (natural)

A

increases death rate because not enough water which affects whole food web. lack of plant coverage leads to soil erosion and even if rain comes water erosion can further damage soil.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What causes flooding?(Natural impacts)

A

heavy rain causing water sources to over flow

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the positive effect of floods (natural)

A

lead to explosion of life = expansion of ecosystem

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the negative effect of flood (natural)

A

lack of oxygen kills land species

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What are some examples of chemical pollution (human)

A

oil spills, sewage, fertilisers, acid rain, radio active waste, global warming

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what is agricultural development and why is ti bad? (human)

A

native crops are replaced by new different crops

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

what is miningdevlopment and why is ti bad? (human)

A

native vegetation is removed and toxic chemicals can seep into the water which can stop plant growth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

what is logging development and why is ti bad? (human)

A

forests sawed up and used as building timber/firewood

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

what is urbanization development and why is ti bad? (human)

A

growth of cites looses natural habitat

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What are introduced species?

A

animals and plants brought to Australia from other countries

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What are some examples of introduced animals?

A

feral cats, camels, donkeys, horses,goats, mice, rats and pigs destroy habitat and compete with native animals for food and shelter

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What are some examples of introduced plants?

A

introduced plants turn to weeds and compete with native resources

17
Q

What is over cropping?

A

killing more animals that can be replaced, resulting in a decrease in population. Animals hunted to near extinction (e.g. white rhinos)

18
Q

What are chemical pesticides?

A

used to kill some pest insects but are carried through wind/water and kills other insects/birds that eat insects right to the end of the food chain.

Ecology 9 (7 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions