<h2><em>the DNA that is packaged into chromosomes must be fully copied. Previous to replication, a germ cell contains two copies of each chromosome, a maternal copy, and a paternal copy. ... DNA replication occurs in the same fashion as it does during mitosis.</em></h2>
Answer is B. Porifera
Members of the phylum porifera includes animals which lack tissues. These animals are also called sponges. These are the simplest multicellular animals. Even though they are multicellular, they do not have any tissues or organs. They have cellular level of body organization. Sponges are aquatic animals and water plays a major role in the feeding, exchange of gases and as well as excretion.
B. By using up less calories than you take
Answer: C. Oil from the oil spill could enter aquatic organisms, like fish, which could make people sick.
Explanation:
Oil spill in water body can be caused by the industrial oil discharge, emission of vehicle oil in water body.
The oil may contain toxic chemicals which could be consumed by the fishes or other aquatic organisms. The fishes and other edible aquatic organisms if consumed by human beings can make people unhealthy or sick.
