They both have 3 coelom usually develop larval forms known as trochophores<span />
Closed Circulatory system in which the blood is confined to
vessels and is kept separate from the intestinal fluid. Closed
systems are more efficient at transporting circulatory fluids to tissues and
cells. chemical exchanges occurs
between blood and intestinal fluid, as well as between intestinal fluid and
body cells.
The answer is two, haploid.
Meiosis is a cell division which results in the reduction of chromosome number by half - from diploid to haploid - in daughter cells. It consists of meiosis I and meiosis II. Meiosis I produces two haploid cells. Meiosis II is analogous to mitosis, so each of these two haploid cells will in meiosis II produce two haploid cells. In total, meiosis results in four haploid cells.
C. mass I hope you have a great day
Answer:
plants will die and decay, causing a decrease in dissolved oxygen; plants will block sunlight to deeper water.