Unit 9

any substance or material that is added to soil or plants to enhance their growth and productivity

• livestock

• fertilizer

• footprint

• yield

the impact on the environment of human activity in terms of pollution, damage to ecosystems, and the depletion of natural resources

• GM food

• footprint

• compast

• feed

animals and birds that are kept on a farm, such as cows, sheep or chickens.

• livestock

• GM food

• compast

• yield

the full amount of an agricultural or industrial product

• GM food

• fertilizer

• yield

• footprint

a mixture of decayed plants and vegetable waste which is added to the soil to help plants grow

• grassland

• nutrient

• compast

• irrigation

food, esp that of animals

• compast

• GM food

• irrigation

• feed

he basic physical unit of heredity

• GM food

• feed

• nutrient

• gene

the process of changing the structure of genes of a living thing in order tho make it healthier, stronger , more useful

• gene

• GM food

• irrigation

• genetic modification

food that has been gene modified

• nutrient

• irrigation

• genetic modification

• GM food

a situation in which a difficult choice has to be made between two different things you could do

• grassland

• dilemma

• manure

• genetic modification