During which geologic epoch do scientists infer
that the earliest grasses first appeared on earth?
(1) holocene
(2) pleistocene
(3) oligocene
(4) eocene

The body is protected against harmful flu viruses by

Explain how fossils scientists make discoveries about the lives of organisms and about how environments have changed over time. plz hurry up it time

Ronald wants to see if a new shower cleaner works better in removing soap than his old cleaner. he uses the new cleaner on one half of the shower tiles and his old cleaner on the other half. identify the independent and dependent variables in this experiment. enter your answer in the space provided.