Johnny likes to watch the birds that visit his birdfeeder. His favorite bird is the cardinal. How could Johnny
determine which kind of birdseed cardinals prefer?
Explain your answer in detail.
Experiment-
Variables-
Test-
Hypothesis-
Independent and dependent-
Data-

Harvey mixes two liquids. which observation of the new mixture most likely indicates a precipitate is forming?

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

4.25g sample of solid ammonium nitrate dissolves in 60.0g of water in a coffee-cup calorimeter, the temperature drops from 22.0 c to 16.9 c. assume that the specific heat of the solution is the same as that of pure water. calculate delta(h) (in kj/mol nh4no3) for the solution proces.