Answer:
pure hydrogen is a pure substance even though it consists of many different types of molecules. what makes it pure substance is that it is free from contamination.
This organism is Fungi, which can either be unicellular or multicellular, and has the only cell wall made of chitin out of the four.
Answer:
Anthropocene
Explanation:
Anthropocene epoch is sort of unofficial epoch that scientists have used to describe basically human made impact on geological scale.
here's more info:
https://www.earthsystems.com/the-anthropocene/
It will lose them and become stable