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Nitrates and phosphates from fertiliser applied to crops may enter ponds and lakes. Explain how nitrate may cause the death of fish in fresh water.

Plants need three main nutrients to grow, which can be helpfully abbreviated as NPK: that's nitrates, phosphates and potassium. Many gardeners and farmers will apply these fertilisers to crops in order to...

IC
Answered by Imogen C. Biology tutor
7711 Views

Why might the government offer subsidies to the farming industry?

A subsidy is a money transfer from the government to producers in order to increase supply. Subsidies can either be provided on a per unit basis or based on total value of production, an ad valorem subsid...

JS
Answered by Joe S. Economics tutor
4035 Views

Do you agree that Shakespeare's Sonnet 116 'defines and redefines its subject in each quatrain and this subject becomes increasingly concrete, attractive and vulnerable’.

Given the length of the quotation, I would like to separate my answer into two parts. Firstly, the issue of defining and redefining the sonnet's subject, and secondly how compatible the terms 'concrete, a...

AS
4187 Views

How does Classical conditioning work?

Classical conditioning was studied by Pavlov and focuses on the learning process. Thinking about Pavlov's experiments with dogs, imagine: a dog salivates when he sees food - that is an uncondition...

GM
Answered by Goda M. Psychology tutor
2695 Views

Briefly outline the components of the working memory model (6 marks).

The working memory model, devised by Baddeley and Hitch in 1974, proposes that short-term memory (STM) is a collection of multiple stores which actively process different types of STM. According to the 19...

MW
Answered by Meghan W. Psychology tutor
36656 Views

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