Chapter 3.1 Biodiversity and the distribution of life

Question 1

Biodiversity in ecosystems is affected by

Answer 1

abiotic and biotic factors

Question 2

Abiotic factors are

Answer 2

physical factors and inculde temperature and pH

Question 3

Biotic factors are

Answer 3

related directly to living organisms and include factors such as grazing and predation

Question 4

Humans can influence biodiversity in ecosystems through creation of

Answer 4

pollution, habitat destruction and over exploitation of species.

Question 5

A biome is a

Answer 5

geographical region of the planet that is characterized by its climate and contains distinctive communities of plants (flora) and animals Fauna).

Question 6

The global occurrence of particular biomes depends

Answer 6

on the physical characteristics of the area including the climatic factors of temperature and precipitation.

Question 7

An ecosystem is the

Answer 7

community of organisms living in a habitat and their interactions with the non-living components of the system.

Question 8

A niche is the

Answer 8

position occupied by an organism and the role it plays within its community.