Help don't guess

Name 3 of the 7 phyla given for the algae that belong to Kingdom Protista

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.

Why reason best illustrates why hershey and chase chose to use viruses in their experiment?

Explain how paleontologists use trilobite fossils as index fossils for various geologic time periods.