The stars with the coolest surface temperature fall into which spectral class?

A. A

B. B

C. G

D. K

E. M

F. O

Compare the composition of the Moon's surface with the composition of the Earth's surface.

What are the two main risk factors for type two diabetes

Regulation and maintenance of constant internal conditions in an organism A. Hemoglobin B. Photosynthesis C. Hypothesis D. Homeostasis

The seed coat's most important function is to provide A) a nonstressful environment for the megasporangium. B) the means for dispersal. C) dormancy. D) a nutrient supply for the embryo. E) desiccation resistance.

Which of these is the most likely reason why the auroras Are sometimes seen at northern Ohio although it is at a much lower latitude than the North Pole? A. The solar winds change their direction constantly B.

Which of the following is an advantage of nuclear energy over fossil fuels? A. Eliminates the need for mining. B. Uses a renewable energy source. C. Releases less CO2 waste products. D. Releases more CO2 waste products.

A cell with 46 chromosomes inside itsnucleus goes through one round of mitosis and cytokinesis. How manychromosomes are inside each of the two resulting nuclei?

The theory that explains how the earths surface is made up of moving rocky plates is called: A. Supercontinent B. Plate tectonics C. Sea floor spreading D. Continental drift

10. Which of the following is an emerging dis- ease that was unknown 50 years ago? a. malaria b. dengue fever C. Lyme disease d. schistosomiasis

What are the agents for deposition