Scientific questions must be...

In attempt to solve the working problems created by the industrial revolution, the united states and many countries in europe considered and/or adopted

In what for do plants utilize nitrogen? why do they need nitrogen?

Which statement describes how favorable traits in a population relate to natural selection? they are the only traits that ever exist in the population. they build in the population over time. they are rarely passed on to offspring. they are found only in a few individuals within the population.