The answer is 100%. Three are observable, but the fourth is just a carrier.
Photosynthesis is a natural process by which trees and plants use energy from the sun and carbon dioxide from the air to make the food they need to live and grow. At the same time, the leaves or needles absorb carbon dioxide from the air. These raw materials flow to plant cells containing chlorophyll.
Explanation:
yrv-thks-szm live bio practical class is going on here
False. Growth rings refer to the rings that are found when the cross section of a tree trunk is examined
Sexual reproducing creatures!