Banded iron formations are composed of alternating light and dark bands of chert.
<h3>
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.
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D. methane
Soil and minerals are found in dirt, which is land, and forests are appart of land, but methane is a <span>flammable gas.</span>
Answer:
Neptune
Explanation:
Neptune is the only planet far enough out to intersect the orbit of pluto.
Answer:
gamma diversity
Explanation:
Gamma diversity
The name was given by R. H. Whittaker ,
<u>Gamma diversity </u>= the total species diversity in the landscape .
<u>Beta diversity</u> = the differentiation among the habitats .
<u>Alpha diversity </u>= the mean species diversity in sites , or at local scale .
The product of alpha diversity and beta diversity together gives the gamma diversity .
The answer is True. The military junta of Myanmar not only
initially refused foreign aid but also threatened to imprison foreign
journalists who reported the situation after the Tropical Cyclone Nargis struck
the country in 2008. It was after a few weeks later when the junta
allowed foreign aid after being subject to immense foreign condemnation.
