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The Sahara is a desert located in northern Africa (as you can see in the map). And one of the only answer countries in proximity to that desert is Mali, so the answer would be C.
Answer:
In the deep ocean layers where the sunlight does not reach, these organisms that are chemoautotrophic use sulfides from the hydrothermal vents to perform chemosynthesis instead of photosynthesis.
Explanation:
Chemoautotrophic organisms are the ones that are adapted to the absence of sunlight. Such organisms identify electron donors in their vicinity and derive energy from the oxidation reactions that these electron donors (mostly, inorganic compounds) undergo.
The major reason for the development of such a trait in these organisms is the depth that they live at. On deep-sea floors, there is an abundance of sulfides. Thus, the organisms living on there make use of the sulfides to fix carbon and obtain energy the required energy to sustain.
The process of chemosynthesis occurring on deep-sea floors due to the presence of carbon, sulfides, and oxygen culminates in the production of organic materials as an end result which the organisms feed on and sustain even when there is no sunlight available. These organisms majorly belong to the bacteria species called Archaea and Extremophiles.
Answer:
e.All of these are true.
Explanation:
Bechel is an engineering company that operates in the field of construction and civil and architectural project management. It is the largest US construction contractor and is the 11th most successful privately owned American company. About Bechel, we can say that its competitive advantage is project management, it was the Hoover Dam construction contractor while helping to rebuild Iraq. Bechtel teams have had to travel under armed escort. Bechtel's procurement program is global in nature.
