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.
The answer is going to be the letter D, nitrogen. I hope this helps!!
Well if its the inner one that is folded then its Mitochondria
Answer
the food chain the answer has to do with trophic levels as you probably know the organisms as the base of the food chain are photosynthetic plants on land and in the oceans these organisms are called the producers and they get their energy directly from sunlight and inorganic nutrients the organisms that eat the producers are primary consumers they tend to them to be small in size and there are many of the primary consumers RRB waris vegetarians their organisations that that eat the primary consumer or meat eaters coronavirus and are called the secondary consumers that the secondary consumer strength to be a larger and fear in number this continues on all the way up to the top of the food chain about 50 percentage of the energy possibly as much as 90 % of in the food is lost at the at each chapter 1 level when an organism is eaten so it is less efficient to be a higher order consumer that rather than have a primary consumer therefore the energy transfer from one trophic level to the next up the food chain is like a private pyramid wider at the top