ECOLOGY

The scientific study of interactions among organisms and between organisms and the environment.

• Physics

• Biology

• Ecology

• Chemistry

A global ecosystem composed of living organisms (biota) and the abiotic (nonliving) factors from which they derive energy and nutrients.

• Organism

• Biosphere

• Population

• Community

The sequence of transfers of matter and energy in the form of food from organism to organism.

• Abiotic

• Biotic

• Food chain

• Food pyramid

Refers to a living thing that has an organized structure, can react to stimuli, reproduce, grow, adapt, and maintain homeostasis.

• Population

• Organism

• Biosphere

• Community

Organisms that compete for food, space, light, water, etc.

• Predeation

• Competition

• Parasitism

• Mutualism