Using fertilisers can lead to algae build up in ponds and rivers.
Why is that bad?
2 answers:
<em>Fertilizer</em> <em> </em> <em>van </em> <em>leach </em> <em>water </em> <em>into </em> <em>fresh </em> <em>water</em> <em>,</em> <em> </em> <em>adding</em> <em> </em> <em>extra,</em> <em> </em> <em>unwanted</em> <em> </em> <em>nitrates.</em> <em> </em> <em>This </em> <em>will </em> <em>increase</em> <em> </em> <em>algal </em> <em>population</em> <em> </em> <em>which </em> <em>can </em> <em>cause </em> <em>algal </em> <em>blooms.</em> <em> </em> <em>Algal </em> <em>blooms </em> <em>reduce</em> <em> </em> <em>light </em> <em>levels,</em> <em> </em> <em>killing</em> <em> </em> <em>aquatic </em> <em>plants.</em> <em> </em> <em>These </em> <em>dead </em> <em>plants,</em> <em> </em> <em>as </em> <em>well </em> <em>as </em> <em>dead </em> <em>algae,</em> <em> </em> <em>become </em> <em>food</em> <em> </em> <em>for </em> <em>bacteria</em> <em> </em> <em>which </em> <em>increase</em> <em> </em> <em>greatly</em> <em> </em> <em>in </em> <em>n</em> <em>u</em> <em>mber.</em>
Answer:
It can affect the environment in a bad way. The marine animals won't be able to survive.
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