Astudent observes this cell under the microscope. he is discussing the structure indicated by the arrow with his lab partner. what would be the most likely classification of the cell pictured based on the structure they are observing? a) this cell is eukaryotic because it contains a nucleus. b) this cell is prokaryotic because it contains ribosomes. eliminatec) this cell is prokaryotic because it contains a nucleus with circular dna. d) this cell is eukaryotic because it contains membrane-bound organelles such as lysosomes and vacuoles.

Describe the change in phase and temperature as water moves from the oceans to the atmosphere and then returns to earth again as rain. a) evaporation : temperature increases; condensation : temperature decreases; precipitation (rain) : temperature decreases b) evaporation : temperature increases; condensation : temperature decreases; precipitation (rain) : temperature increases c) evaporation : temperature decreases; condensation : temperature decreases; precipitation (rain) : temperature decreases d) evaporation : temperature increases; condensation : temperature increases; precipitation (rain) : temperature decreases

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?

Abotanist scrapes pollen off a flower