Suppose all the grains in a sample of sand were exactly the same size. Could the sample still be a heterogeneous mixture? Explain your answer

b

explanation:

c

explanation:

there are so many examples for that in different areas, like biology experiment carried out in our lab recently.

here's one link:

c) 50% there are four chromosomes. after crossing over, 2 of the four have been changed. that means any gamete has a 2 in 4 chance or 50% chance of receiving the mutated chromosome.