Answer:
The answer is A. Invented SCUBA
Explanation:
- Emile Gagnan and Jacques Cousteau were engineers who invented the first SCUBA device, the Aqua-Lung.
- Gagnan's most important contribution to this discovery was his theory that a valve commonly used in gas generator engines would be useful in regulating air supply under water in varying pressures.
According to Google, in biology (or science), it means "to cover any funding for scientific research"
Energy and carbon dioxide and water
Most of the nitrogen<span> that plants and animals </span>use<span> is made by bacteria. Bacteria in the soil </span>can<span> change </span>nitrogen<span> in the atmosphere (N</span>2) into ammonia (NH3<span>), a form that plants </span>can use<span>. ... When plants, animals, and other </span>organisms<span> die, decomposers return </span>nitrogen<span> to the soil.
hope it helps......</span>
Th other author of the natural selection is Alfred Russel Wallace.
Died 100 years ago, Alfred Russel Wallace, a British naturalist, co-discoverer with Darwin of natural selection, also showed that the formation of species was a consequence of the dispersion of populations and a reflection of their evolutionary history.