Ithink my teacher made a mistake on this question or am i wrong?

which is the largest group of organisms?

1. birds
2. eukaryotes
3. prokaryotes
i chose 2. eukaryotes

keep in mind he said which is the largest group of organisms, a eukaryote is any organism that has eukaryotic cells (which have nucleus unlike the prokaryotic cells). birds are eukaryotes so i don't really understand why i got it wrong. either way would be correct because birds are

Describe two recent or ongoing space missions.

Astudent completed a lab report. which correctly describes the difference between the “question” and “hypothesis” sections of her report? “question” states what she is asking, and “hypothesis” states the result of her experiment. “question” states what she is asking, and “hypothesis” states what she thinks the answer to that question is in “if . . then . . because” format. “question” describes what she is trying to find out, and "hypothesis" states the procedures and methods of data collection. “question” describes what she is trying to find out, and “hypothesis” states any additional information or prior knowledge about the question.

If you see a sedimentary outcrop and red layers of sand are at the top of pale layers of rock, what does this tell you about the ages of the rock layers?