Answer:
It is a pure substance. Magnesium is an element.
D Microscopes
because they use them for DNA
a,b,and c, all you an item that can be used and not tested with.
Answer:
False
Explanation:
Because laws and theories are developed for different purposes, laws never become theories, and theories do not become laws.
A crystal or crystalline solid is a solid material whose constituents (such as atoms, molecules, or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions. ... Examples of large crystals include snowflakes, diamonds, and table salt.
Answer:
Drinking water can be produced from waste water and from lakes but the difference is in the difficulty of producing water which we can consume.
Drinking water should be clean and toxic free so that if does not affect the human body. Waste water carry more toxic matter in comparison to lake water that's why, producing drinking water from waste water takes more time, expensive and difficult.
So, producing drinking water from waste water is more difficult as it require the removal of more toxic matter than water in lakes.
