21.2 - Threats to Biodiversity

Question 1

Habitat loss

Answer 1

Using technology to alter areas for humans: Dams, water removal, deforestation

Question 2

Overharvesting

Answer 2

Taking too much resources and decreasing the amount: common resources higher risk, overfishing

Question 3

Exotic species

Answer 3

Introduction of a species in an ecosystem they didn’t grow in

Question 4

Invasive species

Answer 4

Threatens other species in the area: competition, predation, diseases

Question 5

Climate change

Answer 5

Greenhouse gases emissions warming the Earth: Higher sea level, melting of glacier, region seasonal pattern shifts

Question 6

Positive feedback loop

Answer 6

Product of an reaction at the end leads to an INCREASE in the beginning of the cycle : More cattles running leads to panic, increasing the # of cattles running

Question 7

Negative feedback loop

Answer 7

Product of an reaction at the end leads to an DECREASE in the beginning of the cycle : Taking action to slow down climate change