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100

What are Biotic Factors?

Living parts of an ecosystem

100

What is a habitat?

the physical area that a species inhabits within an ecosystem

100

What is Matter?

anything that has mass and takes up space

200
What are Abiotic Factors?

Nonliving parts of an ecosystem

200
what is an Ecosystem?

Biotic factors in a community interacting with the abiotic factors in a given area

200

particle theory of matter

all matter is made up of particles

300

What is the Atmosphere?

A layer of gases surrounding the earth

300

what is Sustainability?

the ability to maintain ecological balance between biotic and abiotic factors.

300

what is an element 

one kind of particle that can not be broken down

400

What is Lithosphere?

The solid outer layer of the earth

400

what is solar energy?

energy from the sun that is absorbed or reflected from the earth and converted into thermal energy

400

what is a compound 

two or more different types of elements that are chemically bonded to each other in definite proportions 
500

What is Biosphere?

The part of the Earth where life exists 

500

what is chemical energy?

Potential energy stored in chemical bonds.

500

what is a solution?

a mixture that forms when one substance dissolves another