Answer:
Mixtures can be either homogeneous or heterogeneous. A mixture in which its constituents are distributed uniformly is called homogeneous mixture, such as salt in water. A mixture in which its constituents are not distributed uniformly is called heterogeneous mixture, such as sand in water.
The answer is D I hope this helps you !
<span>The "second" is the SI base unit of time.</span>
Answer: B) calcium nitrate
