Answer:
The changes which can be reversed are called reversible changes. These are also called physical changes. Example- Melting of ice, Tearing of paper etc are physical or reversible changes.
Explanation:
Answer: Lakes are valuable natural resources, both for human and non-human life. ... Outflows from lakes and rivers include evaporation, movement of water into groundwater, and withdrawals by people. Humans get into the act also, as people make great use of surface water for their needs.
might wanna use your own words tho
Answer:
True
Explanation:
Yes, scientists have observed many mysteries of plants.
Answer:
they help lower the activation energy of chemical reactions
