How do human change the Earth's surface? Human activities such as overpopulation can change the Earth's surface.
Human activities such as driving cars can change the Earth's surface.
Human activities such as mining and deforestation can change the Earth's surface.
Human activities such as poaching can change the Earth's surface.

When a septic tank backs up a goes in to clean it out

Lab reagent, hypothesis test.a reference solution used as a lab reagent is purported to have a concentration of 5 mg/dl. six samples are taken from this solution and the following concentrations are recorded: (5.32, 4.88, 5.10, 4.73, 5.15, 4.75) mg/dl.these six measurements are assumed to be an srs of all possible measurements from solution.they are also assumed to have a standard deviation of 0.2, a normal distributin, and a mean concentration equal to the true concentration of the solution.carry out a significance test to determine whether these six measurements provide reliable evidence that the true concentration of the solution is actually not 5 mg/dl.

What does the xylem do? stores the glucose captures the sunlight absorbs oxygen into the leaf carries water from the roots to the leaves