First question is - Why do we have limestone? Formed from this type of sediment are biological sedimentary rocks. Their biological organ is often revealed in the rock fossils. Some limestones can form by direct precipitation of calcium carbonate from marine or fresh water. (The second question is) - What do iron bands mean? The rocks are "banded" because the iron minerals deposited in alternating bands with silica and sometimes shale. The banding might have resulted from seasonal changes in organism activity steel mill. Most iron ore is used to make steel. Here a steel slab is being cut to length in a steel mill.
Answer:
d . different population of the same species physically separated from each other forming new species.
Answer:
<u>decomposers</u> are organisms that break down dead matter in an ecosystem.
8. in the process of <u>p</u><u>h</u><u>o</u><u>t</u><u>o</u><u>s</u><u>y</u><u>n</u><u>t</u><u>h</u><u>e</u><u>s</u><u>i</u><u>s</u><u>.</u><u> </u>
somebody else help
Answer:
A nucleotide is the basic building block of nucleic acids.
Explanation:
RNA and DNA are polymers made of long chains of nucleotides. A nucleotide consists of a sugar molecule (either ribose in RNA or deoxyribose in DNA) attached to a phosphate group and a nitrogen-containing base.
Hope this helps even though it was yesterday :)
