a student has been measuring the oxygen levels in a lake for one year. at the end of the year she graphs he oxygen levels by month. this is an example of which step of the scientific method?

T Object]User: Through which structure do wastes pass into the rectum? a. duodenum c. small intestine b. large intestine d. villus

If two organisms can mate and produce fertile offspring, they must be part of the same

In the 19th century pollution made the bark of many tree go black. Explain why

Why is scientific research on the invasive species important

What happens inside a thermometer when the temperature goes up.

If the seawater carbonate ion concentration is 270_mol/kg, what is the approximate rate of calcification, and approximately how many days would i take 1 square meter of reef to accumulate 30mmol of calcium carbonate (CaCO3) ?

What is the importance of decomposers in an ecosysyem such as mold?

Which statement about ddt best shows how science has been impacted by society? ddt led to insect resistance. ddt was considered harmful and was replaced by other pesticides. ddt was the first modern insecticide.

What factors affect the diffusion of water through a membrane by osmosis?

What chemical structure makes up the cell membrane? protein bilayer hydrophilic phosphate phospholipid bilayer hydrophobic fatty acid