ere is a mutation in a bacterial gene X's promoter that changes a nucleotide from a T to an A in a postition between the -10 and -35 elements. What does this mutation do (most likely)

According to the big bang theory, after the "bang," the universe remained dark until about  300,000 yearsone billion yearsthree minutesthree billion years  later, when neutral atoms began to form.

Which set of characteristics best describes sedimentary rock? a) largest type of rock, made of organic matter, hardest type of rock b) often contains layers, forms near sources of water, contains fossils c) least abundant type of rock, made of other rocks, made mostly of minerals d) most abundant type in earth's crust, made of magma/lava, contains no fossils

Explain how organisms could be harmed by high levels of salt from roadways?