Which of the following is a major group of protista?
algae
phytoplankton
protozoa
all of the above

Astudent drew the following flowchart to show the movement of nutrients. soil → roots → plants →? where does nitrogen go next? a. directly into nearby animals as nutrition b. directly into aquifers through condensation c. directly into the air through evaporation d. directly into nearby plants during fixation

If jane has the blood type ab and marries john who has type o blood what are the possible phenotypes of their first kid?

Which of the following is the earliest era of earth's geologic time scale? cenozoic mesozoic precambrian paleozoic