Which of these characteristics would not help you identify an animal you encounter along the seashore as an echinoderm? Which of these characteristics would not help you identify an animal you encounter along the seashore as an echinoderm? Visible tube feet A spiny skin A calcium carbonate endoskeleton just underneath the skin Five-part radial symmetry

d. groundwater flows through the subsoil and deposits minerals.

sex cells are usually half's then they find another half and make a fertilize egg

occluded front i think

essentially, one bacterial cell splits into two daugurer cells. bacterial offspring don't need or get care from their parents because they are in a sense their own parents. that said, some bacteria can and do depend on other bacteria especially in harsh environments such as bacterial microfilms in hot water tanks.