Earth's air is comprised primarily of Select one:
A. Nitrogen
B. Carbon Dioxide
C. Water Vapor
D. Oxygen

Ronald wants to see if a new shower cleaner works better in removing soap than his old cleaner. he uses the new cleaner on one half of the shower tiles and his old cleaner on the other half. identify the independent and dependent variables in this experiment. enter your answer in the space provided.

What organ systems are working to you cool down after a workout?

Genetic disorders can result when sister chromatids fail to seperate properly. during what phase is this problem most likely to occur?