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French agriculturist J.B. Boussingault (1834) proved that air and water were the primary sources of C, H, and O in plant tissue. He was a French chemist and agronomist who made significant contributions to agricultural science, including the understanding of plant nutrition and the role of elements such as nitrogen in plant growth. His experiments in the mid-19th century helped to debunk the then-prevailing theory that plants obtained carbon from the soil, showing instead that they primarily derive it from carbon dioxide in the atmosphere.
Contain commonly used idioms and phrases in the English language. In each case, choose the option representing the correct meaning of each of ...
I thought the illness was going to take him, but now he is ______________.
an idea that is based on feeling and for which there is no proof
In each question below, a sentence is given with an idiom/phrase printed in bold type. That part may contain a grammatical error. Each sentence is follo...
Economists argue about a lot of things, yet many would probably see eye to eye on the benefits of free trade, which generates wealth by allow...
Be glad to see the back of
A storm in a teacup
Crocodile tears
Select the most appropriate meaning of the bold idiom in the given sentence.
Their relationship has run into rough weather ever since they ...
Select the most appropriate meaning of the Given idiom.
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