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the harmful and the beneficial effects of advertising?
Poison
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steroids
Beneficial Effects - it often leads to creation of new land Harmful Effects - hot molten lava, pyroplastic smoke. Can kill anything below it with ease.
overcrowding
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.
Consequences
The useful effects of algae is that it provides oxygen for various living things. Algae is also a food resource for humans and fish. Algae can become harmful if they produce toxins. Too much algae in the water can kill fish because the algae consumes a great amount of oxygen and can block the sunlight from reaching underwater.
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Population explosion of algae is called an algal bloom. These blooms can disrupt ecosystems by creating harmful effects such as oxygen depletion and toxins that can be harmful to other organisms.