Explain how the separation of the following mixtures is carried out: a. Mixture of alum from impure samples
b. Components of blood and urine
c. Mixture of iron filings, sand and husk
d. Mixture of sand, water and salt

Which answer lists the fundamental forces in order from strongest to weakest

How does a hydroelectric power plant converts energy into energy.

Transportation is the largest single source of air pollution in the united states. air pollution can harm the environment and human health. which technology could offer a solution to this problem? mufflers that reduce noise motors that run on electricity tires that improve gas mileage