Answer:
(A)Yes.
Explanation:
Homologous structures provide evidence for common ancestry.
Good Luck
NH3 since they are both non metals
Answer:C
Answer: It would probably be A.
Explanation: Abrasion means scraping or wearing away. Therefore the correct sample is probably going to look smaller, smoother, and more even from all the scraping of the river currents.
Hope that helps!