Before 1969, protists were classified as plants. What observation was made about protists that led to this classification?

Adigestive system that is a series of tubes beginning at the mouth and ending at the anus is a digestive system.

Astudent is looking through a microscope at some cells of an onion root tip. many of these cells are undergoing division since the root tip grows quickly and requires more cells. which cell most recently underwent metaphase? w x y z

What type of weather does tropical continental air bring in summer? hot and cloudy cool and sunny hot and sunny cool and cloudy