The answer that makes the most since is A!
Banded iron formations are composed of alternating light and dark bands of chert.
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What is chert?</h3>
- Banded iron formations are made up of alternating light and dark chert bands.
- Chert is a sedimentary rock that forms in a variety of ways and is almost entirely composed of silica (SiO 2).
- When the siliceous skeletons of marine plankton are dissolved during diagenesis, silica precipitates from the resulting solution, biochemical chert is formed.
- Chert layers, which occur as irregular beds or rounded nodules within limestone formations, are common in eastern Kansas.
- Because it is harder than limestone, chert is more resistant to erosion.
- The Flint Hills' chert-topped hills are the result of the landscape's uneven erosion.
Therefore, banded iron formations are composed of alternating light and dark bands of chert.
Know more about chert here:
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The answer to the given question above would be option B. SAHEL. The one of Africa's geographical regions that consists <span>of savanna, or grassland, for grazing animals such as giraffes, warthogs, and various types of cattle is SAHEL. Hope this helps.</span>
Speaking italian as a native language
India spreads along two distinctive time zones +UTC5:00 and UTC+6:00. In any case, India needed to proceed with a similar time all through the entire nation and hence thought of UTC+5:30 which is the normal of the above. In spite of the fact that this works decently pleasantly for the various parts of India, it doesn't function admirably for the northeastern states.
