Life on Earth

• A species is a group of organisms that can interbreed to produce fertile offspring.
• An ecosystem consists of all living organisms in an area and the non-living components of the environment that the living organisms interact with and the abiotic factors that affect them.
• An ecosystem can be as small as a puddle or as big as an ocean.
• A habitat is a place where an organism lives.
• A population is all organisms of one species in an area.
• A community is a group of populations of different species living in the same area.
• Biodiversity is the total variation which exists among all living things on Earth.
• Habitats with large numbers of many species have high biodiversity.
• Habitats with small numbers of few discuss have low biodiversity.
• A producer is able to make their own food by photosynthesis (green plants).
• Consumers must eat plants or other animals to get energy.
• Carnivores eat animal material.
• Herbivores eat plant material.
• Omnivores eat plant and animal material.
• A predator must hunt other animals for food.
• Prey is hunted by predators for food.
• A food chain shows feeding relationships between living organisms and starts with a producer, has arrows showing the direction of energy flow and organisms all dependant in eachother.
• Food webs are where a producer is eaten by several consumers. These are preyed upon by many different predators.