Answer:
an element is a pure substance which can not be spilt into simpler substances by chemical means
Explanation:
examples hydrogen, oxygen, copper
<span>Bio-indicators are macro-invertebrates that detect Water Quality based on how tolerant they are to pollution. The number of species of each type of Bio-indicator (pollution tolerant, intolerant, and semi-tolerant) will calculate the index of the water.</span>
Sometimes it is True and sometimes it is False it totally depends upon that how do u use the scope of energy.
1) A
2) B
3) C
4) D
5) E
6) F
7) G
8) H
The answers are already in the picture.
