Which of the following is a characteristic shared by all members of the kingdom protista?

a) multicellular
b) eukaryotic
c) phostosynthetic
d) heterotropic

According to the diagram, what sources contribute to the phosphorus found in soil? according to the diagram, phosphorus found in soil contributes phosphorus to what other sources? (site 1)

Awic dietitian is meeting with a client who has an infant and a young child. the mother says that the young child is a very picky eater and will only eat crackers and juice. the health worker notices that the child's hair is brittle, his nails tear easily, and the skin inside his lower eyelids is very pale. these are all signs of iron deficiency.

How can scientists test their ideas about the origin of the universe if they can't physically interact with or study?