D. Bright Echo with a comet tail or ring down artifact. I hope this helps, my sister is a nurse so I know a few things.
Answer:
erosion and a, weatheri g and b
An enzyme is a protein molecule in cells which works as a biological catalyst. *brainliest pls*
Answer:
Polyploidy is the state of a cell or organism having more than two paired (homologous) sets of chromosomes.
Explanation:
Most species whose cells have nuclei (eukaryotes) are diploid, meaning they have two sets of chromosomes—one set inherited from each parent.