Answer:
habitat
Explanation:
habitat is part of the ecosystem
niche describes ahow different organisms are linked
The answer is letter A. In most organisms cellular respiration usually involves oxygen to produce the most energy. Except in the process of fermentation, where the cells are deprived with oxygen causing it to form bacteria and other forms of organisms within the fermented sample.
Hydrogen is abundant in the sun.
The physical description of sulfur is hydrogen
Dry and arid parts of the world with little to no rain.