Answer:
The metric system measures mass in grams or kilograms, distance in meters or kilometers, and volume in liters. It measures temperature in Kelvin or Celsius degrees instead of the Fahrenheit degrees used in the imperial system. The Basic Unit for Mass The metric system measures mass in grams.
Look at the water cycle, all water is connected through the water cycle
Yes people are trying to plant more trees and promote awareness on afforestation and some have even started making rules the 'clean air act'