grass,lily pad,and different things like that
Because this is their Nature.
Only by the force of which living things or nature allow.
how understanding of the interrelation ships among living things contribute to balance of nature
Living things are alive.
Living things are alive.
This is the drawing of surroundings of humankind and those existing independently of human activities. Eg mountains, trees, animals or rivers.
living things have different physical features and different needs to survive.
Do you mean how are living things different from non-living? If yes, living things have cells, give off wastes, and some other stuff.
Different living things excrete in different ways: there is no single way.
Yes, a fly, as all living things, are a part of nature.
They are LIVING THINGS!
Different living things excrete in different ways: there is no single way.