Human Impact On The Environment

Question 1

Extinction definition

Answer 1

Loss of a type of species leading to decrease in biodiversity

Question 2

Reasons for extinction

Answer 2

Natural selection

-Monoculture: growing large number of same genetically identical specie
-pollution
-habitat destroyed
-alien species

Question 3

Conservation definition

Answer 3

Protecting and maintaining endangered habitat or animals. To maintain biodiversity

Question 4

Ways of conservation

Answer 4

-Sperm/ seed bank
-Breeding programme
-National park on habitat

Question 5

In-situ conservation

Answer 5

Protection of species in their natural habitat (national park)

Adv: cheaper - less resources, encourage natural behaviour for re-introduction

Disadv: Still exposed to natural threats, harder to enforce rule if opened

Question 6

Ex-situ conservation

Answer 6

Protect species by removing from natural environment (zoo)

Adv: easier to maintain + protect, habitat with reduced threat, research opportunities

Disadv: Semi-domesticated, die if re-introduced, more expensive