Answer:
The greenhouse effect is the way in which heat is trapped close to Earth's surface by “greenhouse gases.” These heat-trapping gases can be thought of as a blanket wrapped around Earth, keeping the planet toastier than it would be without them. Examples of gasses: Carbon dioxide, methane, and water vapor.
Explanation:
no problem.
The element starts off as 100%. half of 100% is 50% and half of 50% is 25%. the element has emitted 2 times the half life which is 10,000 x 2 = 20,000
the fossil bone is 20,000 years old
Answer:
A.
Strength and usefulness of claims are evaluated through scientific argumentation
Explanation:
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Yes people are trying to plant more trees and promote awareness on afforestation and some have even started making rules the 'clean air act'
