clearing balances

photosynthesis

The process by which green plants and some other organisms use sunlight to synthesize foods with the help of chlorophyll.

cell respiration

The metabolic processes by which cells convert sugars and oxygen into energy, producing carbon dioxide and water as byproducts.

mitosis

A type of cell division that results in two daughter cells, each having the same number and kind of chromosomes as the parent nucleus.

osmosis

The process of movement of water across a semipermeable membrane from an area of lower solute concentration to an area of higher solute concentration.

enzyme

A protein that acts as a catalyst to accelerate a biochemical reaction.

homeostasis

The ability of an organism to maintain a stable internal environment despite changes in external conditions.

biodiversity

The variety of life in the world or in a particular habitat or ecosystem.

ecosystem

A biological community of interacting organisms and their physical environment.

trophic level

Each of the hierarchical levels in an ecosystem comprising organisms that share the same function in the food chain.

natural selection

The process whereby organisms better adapted to their environment tend to survive and produce more offspring.