Agriculture - introduction

Controllable food supply Surplus of food Practised all over the world

Labour problems High energy use Habitat loss Pollution issues - fertilisers

Grassland where animals can graze e.g. cattle and sheep

Energy and water use Habitat loss Pollutant problems - organic and inorganic WHY? Vast majority of the world is dependent on someone else making their food

Organisms that produces its own energy

Organism that uses sunlight to produce its own energy through photosynthesis

An organism that make its own food using energy from chemical reactions instead of using sunlight

Plants Algae Cyanobacteria

Sulfur-oxidising bacteria Nitrifying bacteria

Produce their own energy/food Not reliant on other organisms

Reliant on environmental conditions e.g. sunlight

Organism that can’t produce its own food and must obtain energy by consuming other organisms

Depend on other organisms for food Vulnerable to changes in the availability of food sources

largest part of a ruminarits stomach where food is fermented by microbes to help break down tough plant materials for digestion

Linear sequence of organisms through which energy and nutrients are transferred

Specific rank in a food chain that indicates an organism’s position in terms of energy transfer