In the Kreb cycle, energy is needed so D is wrong. The first reactant and last product are the same which causes it to be cyclic so the answer is C
Answer:
Obsidian is an igneous rock that forms when molten rock material cools so rapidly that atoms are unable to arrange themselves into a crystalline structure. It is an amorphous material known as a "mineraloid." The result is a volcanic glass with a smooth uniform texture that breaks with a conchoidal fracture (see photo).
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Answer:
1
Explanation:
A prokaryote has no nucleus the DNA just floats in the cytoplasm. All the other answers are incorrect, prokaryotes can perform life functions, have organelles, and are smaller than eukaryotes.
The correct answer is option d, that is, glaciers and icecaps.
Though the amount of water present in the glaciers and the ice caps is a small ratio in comparison to the total water found in and on the Earth, it demonstrates a huge ratio of the world's entire freshwater.
On the basis of the data, about 1.7 percent of all the water found on Earth is locked up in snow and ice, however, the majority of the entire freshwater on the planet, that is, about 68 percent is captivated in glaciers and ice caps.
