The period during which the presence of stromatolites decline is the Proterzoic period. Stromatolites are widely distributed sedimentary structures consisting of laminated carbonate or silicate rocks, produced over geologic time by the trapping, binding, or the precipitating of sediment by groups of microorganisms, primarily cyanobacteria.
<h3><u>Answer;</u></h3>
The above statement is <u>false</u>
<h3><u>Explanation</u>;</h3>
- Rocks have different porosity and permeability characteristics, which means that water does not move around the same way in all rocks below ground.
- Permeability greater than 250 mD are considered very good, while permeability less than 1 mD are considered poor.
- Low porosity normally results in low permeability, but high porosity does not necessarily imply high permeability. It is possible to have a highly porous rock with little or no interconnections between pores.
I don’t think it would change the effectiveness , if bees got used to it or it had always been like that, they wouldn’t have a problem, but if it was a sudden change then they might dislike it
Hello there!
Adult skin cells can no longer become other types of cells because tthey have already undergone ____________
differentiation
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If we draw up a Punnett square, we will see that after crossing two heterozygous individuals the possible offspring are RR, Rr, Rr and rr:
R r
R RR Rr
r Rr rr
Now to produce red flowers, an individual must be either homozygous dominant (RR) or heterozygous (Rr) and so from the Punnett square we can see that 3/4 of the offspring would produce red flowers. If we apply this ratio to 100 offspring, then we get:
3/4*100 = 75 offspring with red flowers, thus the answer is C
