Echinoderms are not arthropods like the others. Starfish and sand dollars are echinoderms.
Answer:
They produce quickly
Explanation:
Mendel chose pea plants for his experiments because they are easy to raise, have many offspring per mating, can fertilize themselves and have varieties in genotype and phenotype that are easily observable. These characteristics make pea plants ideal in the study of genetics and heredity.
An isolated system is a system in which neither matter nor energy can move in or out when a chemical reaction takes place.
