a replica of a person place or thing that shows some but not all of its properties.
Sir Isaac Newton
British scientist and mathematician who invented calculus and discovered the laws of gravity
restriction, to hold back, to keep below a certain level
the small amount of gravity experienced in space
Mass divided by volume; a measure of how "heavy" an object is
A force or influence that balances, checks or limits an opposite one.
To make balanced
describes a place where an organism could easily live
energy in the form of electromagnetic waves; such as radio waves, infrared rays (heat), light, UV rays, X-rays
A smaller part of the biosphere consisting of the organisms and non-living features that interact in an area
The variety of organisms in an ecosystem
Made up from all of the organisms in an ecosystem that belong to the same species
The place in which an animal lives
Organisms living or that had once lived in the environment (i.e., mouse, clover, dead tree)
Non-living factors in the environment (i.e., light, temperature, water, atmospheric gases, wind, soil, and nature of land surface
Large geographic areas with similar climates and ecosystems (i.e., desert, tundra, etc.)
All organisms of the same kind that adapted to a particular set of resources (called a niche) in the environment
The capacity to endure. In ecology, the word describes how biological systems remain diverse and productive over time.