evironmental friendly

nature of bats
As a mechanical engineer whose is working hard towards my field of studies, it got into concern of how my environment is made up and how nature itself is.
I thought of how certain activities which is being carried on by some creatures are causing others harm or good.
Looking at how bats are breeding in that environment and sometimes they seem to cause destruction or harm to some things. But they make the skies so beautiful and blooming when they fly in the morning.
I also thought they had been harmful to the tress of which they live, but they rather help in pollination and most beautiful plants are just because of their wonderful activities. Now I can say, they are environmental friendly due to the extra step I tool out of my field of study.
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