80-100km or 50-60 miles thick
Explanation:
plant absorbs water through the root by
the osmosis process
concentration of root is more than water
so. a pressure is developed in the wall of root
by the which water goes up and reaches to the
leaf of the plants
I would say C. Reduce climate change because taking a car/vehicle results in the earth becoming polluted which leads to climate change.
*EXPLANATION*
Riding your bike or walking will not do anything to help people chopping down trees, people giving birth to more and more children nor will increase the amount of animals/organisms we have on our planet.