Members of which of the following phyla have the most species that parasitize humans?
A. Porifera
B. Mollusca
C. Echinodermata
D. Platyhelminthes

What feature of cell theory is best demonstrated in the image

Chalk is an ionic compound. which is a property of all ionic compounds that makes chalkboard? particularly useful for writing on a a high melting point hardness and brittleness inability to dissolve in water a multicolored appearance

Which best explains why there are 64 possible codons in the genetic code and only 20 amino acids that make protiens of living organisms on earth