Earth's ice sheets grow and retreat on a cycle of about 41,000 years. Which natural process is responsible for this cycle?
A. the eccentricity of Earth's orbit
B. the wobble in Earth's tilt on its axis
C. the El Nino Southern Oscillation
D. the changing size of the Ozone hole

Maria wants to determine which type of disinfectant kills the most bacteria. which of the following is the best way for maria to determine this? a. ask ten different companies that make disinfectants which type is best. b. put the same amount and species of bacteria on ten identical plates, and add ten different kinds of disinfectant to each plate. c. interview ten different people to determine which type of disinfectant they prefer. d. put the same amount and species of bacteria on ten identical plates, and add a different disinfectant to each plate.

How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?

We are hoping to create 5.72 grams of glucose. the plant was given 4.75 liters of co2 and 2.81 g of h20. which reactant was the limiting reagent? how much excess mass did we have of the other reactant?