Why are scientists concerned about the depletion of the ozone levels in the stratosphere?

Researchers want to use edna to look for an invasive species in the water which of the steps would be likely do last

How did alexander fleming’s research solve a societal problem? he developed ways to treat inherited diseases. he advocated for regular hand washing to kill germs. he discovered a new type of medicine that could treat infections. he discovered the cause of mad cow disease, an emerging disease.

Why is the statement not a hypothesis? sunflowers require soil and plenty of sunlight and water to grow and thrive.