The altitude of Polaris measured by an observer at the Tropic of Cancer is

Landfills are waste disposal sites. they are often man-made depressions in the ground covered with a lining designed to prevent any leakage of waste materials. however, landfills can leak through the base resulting in negative impacts on the surrounding environments. what negative impact to the environment is caused by organic and inorganic constituents that are dissolved by rainfall in the landfills?

From which layer of atmosphere is the top layer of the thermosphere? a.troposphere b. stratosphere c.mesosphere d.exosphere hurry me i will give a braineilst

The model illustrates a process by which a substance is taken up by a cell