E6 - Factors Affecting Diversity

Question 1

Habitat change?

Answer 1

This is when humans alter a habitat so much that native species can no longer survive there

EX: to collect bottom-dwelling fish can destroy coral reefs

Question 2

Habitat change can also lead to

Answer 2

fragmentation of habitats

Question 3

fragmentation of habitats?

Answer 3

The habitat is now a patchwork of different smaller habitats

Look at view of farmland which used to be deciduous forest in Canada!

Question 4

Overexploitation?

Answer 4

When we deplete or use a resource faster that it can be replaced
Common example is overfishing
EX: Cod overfishing in Atlantic Canada
Overuse of Water
EX: Drying up of the Aral Sea

Question 5

Pollution?

Answer 5

Is any substance added to the environment that produces a condition that is harmful to organisms
Solid waste: Cannot be recycled, which is isolated from contaminated ecosystems in landfills

Question 6

Air Pollution

Answer 6

One of the one of most concern is carbon dioxide gas which is key in climate change

Question 7

Water pollution

Answer 7

Very easy to pollute. Can enter water from a specific source or indirectly through rain or snow

Question 8

The toxins introduced into water or soil can…

Answer 8

bioaccumulate and biomagnify

Question 9

Acid Rain

Answer 9

Emissions from human activity can combine with water in the atmosphere to make acids which makes acid rain

Question 10

Acid rain can…

Answer 10

Damage the waxy protective coating on leaves
Burns the skin of earthworms when in the soil
Can effect the way plants absorb nutrients

Question 11

Invasive Species

Answer 11

Increased by international travel and trade
And invasive species is a non-native species that causes harm to the ecosystem in which it has been introduced
Tend to outcompete the native species, have no competitor or can reproduce faster than native species

Question 12

There is a difference between Global warming and Climate Change
Global warming:
Climate change:

Answer 12

Global warming: The increase of the earth’s annual temperature
Climate change: significant long term change in expected climate patterns

Question 13

Climate Change and Global Warming can cause…

Answer 13

Range Shifts
Ex: Dengue fever carrying mosquitoes have returned to Key West Florida in 2009
This disease was absent of more than 75 years!
The return is blamed on warming-induced insect migration.