Factors effecting biodiversity

Question 1

What is the main reason for loss of biodiversity?

Answer 1

Human activity and has a wide impact all over the planet

Question 2

What is a way of reducing the effect on biodiversity in agriculture?

Answer 2

Using a perma-culture system

Question 3

What is perma-culture?

Answer 3

Each plant has a niche/space so the density of planting is higher and many different types of plants can be grown in a small area

Question 4

What does modern agriculture rely on?

Answer 4

Monoculture, where the same crop is on the same land each year

Question 5

What is deforestation?

Answer 5

The removal of large mature trees

Question 6

What is the atmospheric impact of deforestation?

Answer 6

Changes in rainfall and location and less CO2 absorbed so more CO2 in the atmosphere

Question 7

What is the physical effect of deforestation?

Answer 7

Loss of habitat, poor drainage leading to flooding and loss of rich topsoil and loss of undiscovered mechanically useful animals and plants

Question 8

What is the effect of climate change?

Answer 8

Organisms need to adapt to changing conditions or move to conditions that still suit them

Question 9

What happens in an animals cannot adapt to climate change?

Answer 9

Movement will be made difficult by obstacles, such as large human developments, agricultural land and large bodies of water

Question 10

What are the atmospheric impacts of climate change on agriculture?

Answer 10

Higher CO2 levels will enhance rate of of photosynthesis, higher temperatures increase growth rate and greater evaporation and precipitation so changed rain pattern

Question 11

What are the physical impacts of climate change on agriculture?

Answer 11

Longer growing seasons, loss of land due to sea even rise and current crops are adapted to give high yields in original conditions and have little genetic variation so can’t adapt