Sunlight is beneficial in that it provides Vitamin D to the body. Vitamin D prevents osteoporosis, depression, prostate cancer, breast cancer, and even effects Diabetes and obesity.
It can be harmful in that too much sunlight exposure is a direct link towards certain types of skin cancers, with the most dangerous being Melenoma
Gasoline
Gasoline
Ozone is beneficial in stratosphere. It acts as a pollutant at ground level.
it destroy both useful and harmful organisms
both , harmful becausethe civilization could be heart from others and beneficial because the civilization can know about other culture
the harmful and the beneficial effects of advertising?
It works both ways equally.
The effects of the Columbian Exchange were both harmful and beneficial. This is because the diseases caused native Americans to die but new goods were spread to different areas.
Harmful.
Cows are very beneficial.
it is a beneficial plant
It's harmfull to the existing forest, but it's beneficial to certain species of plants and insects that specialises in using recently burnt ground.