Give and take
A tree can stand tall with plenty of water and sunlight let alone the nutrients from the soil.
A tree can provide oxygen and take carbon dioxide.
It provides just as much as what it recieves.
Given to much away would be left with nothing to survive and thrive and if it takes too much and gives little neither can it survive.
As in life we are willing to take because its what we desire.
Ocassionally we might give, but it is only so we can get more.