B: Occur naturally, have a fixed chemical composition
In the text of 'why summer makes us lazy', the author tells us the impact of weather on human's mood and she made this idea by studying the changes that takes place in the climate during summer.
<h3>Why does
summer make us lazy?</h3>
Maria Konnikova tells us in her book that that a lot of people are said to be very effective in the cold weather than when it is warm weather.
Therefore, In the text of 'why summer makes us lazy', the author tells us the impact of weather on human's mood and she made this idea by studying the changes that takes place in the climate during summer.
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Is there a story that goes with it if you could link it i may be able to help you. =)
The correct plural form of echo is echos or echoes. Either way it is grammarly correct. I believe that echoes is the correct form.
echoes