This was because the experiment showed that a substance could emit radiation even while it was not exposed to light.
How am I supposed to help you if there's not picture of what the problem is
No but a chemical change yes a chemical property is only a characteristic not change
Answer:
Explanation:
Excess fertilizers, herbicides and insecticides from agricultural lands and residential areas.
Oil, grease and toxic chemicals from urban runoff and energy production.
Sediment from improperly managed construction sites, crop and forest lands, and eroding streambanks.
