Answer:
Explanation:
Biodiversity valuation of each species of natural resource
A complete value representing contribution to the system, usage (economically or ecologically), even carbon stock. Do, or could, nature areas keep databases of this information about their species?
Answer:
A straight angle measures 180°. ... An angle can be measured using a protractor, and the angle of measure 90 degrees is called a right angle. In a right angle, the two arms are perpendicular to each other. When the right angle is divided into two equal parts each angle measures 45°.
<u>Answer:
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The build-up of three oxygen created our ozone layer around two billion years ago.
<u>Explanation:
</u>
- The ozone layer is a part of the stratosphere which is located right after the troposphere in the atmosphere of the Earth.
- The ozone gas is made up of the abundance of three oxygen molecules combining with the ultraviolet radiation emitted by the Sun.
- The development of the ozone layer happened around two billion years ago when the oxygen concentration levels on the planet began to rise slowly and gradually.
Answer:
CASH CROP
Explanation:
a crop that farmers grow so that they can sell it, rather than using it themselves.
Hope it helps you :)
