Answer:
a glass of muddy water
Explanation:
Pure substances contain only one element or compound.
Calcium is one element so it is a pure substance. Ice and water have the same molecular structure, so it is a pure substance. Aluminum oxide is a chemically pure compound.
The only example that is not a pure substance is muddy water due to the multiple components of mud mixing with the components of water.
Hope that helps.
Well a<span> sperm fertilizes an egg to form a zygote.</span>
Bacteriophages, Adenoviruses, or parvoviruses
<span>The Miller-Urey experiment was one that produced several things, such as hydrogen cyanide, amino acids, adenine (among other nucleotides), and urea. The experiment proved that (c.) it was possible to form organic molecules from inorganic molecules. This explains why organic molecules were produced.</span>
