The most inclusive division of time is the eon, which can be Archean, Proterozoic, Phanerozoic and they are divided into eras (Early/Middle/Late for the Archean and Proterozoic, Paleozoic, Mesozoic and Cenozoic for the Phanerozoic). Therefore, the correct answer is D. eon.
The solid waste produced by a sewage-treatment plant is called Sludge
Answer: Option C
<u>Explanation:</u>
Sludge is a semi-strong slurry which is created as end product of mechanical procedures such as from water treatment, wastewater treatment or on location sanitation frameworks. For instance, it may be delivered as a settled suspension acquired from customary drinking water treatment, as sewage muck from wastewater treatment forms or as fecal slime from pit toilets and septic tanks. The term is additionally here and there utilized as a conventional term for solids isolated from suspension in a fluid.
my name is Oladeji emmanuel I hail from Oyo state Nigeria
Answer:The 3rd one
Explanation:
“Crust” describes the outermost shell of a terrestrial planet. Earth's crust is generally divided into older, thicker continental crust and younger, denser oceanic crust. The dynamic geology of Earth's crust is informed by plate tectonics.
The answer is negative controls. These are groups where no phenomenon is probable. They ensure that there is no effect when there should be no effect. Where there are only two possible outcomes, e.g. positive or negative, if the treatment group and the negative control both produce a negative result, it can be concluded that the treatment had no effect. If the negative control group and the treatment group both yield a positive result, it can be inferred that a puzzling variable is involved in the occurrence under study, and the positive results are not only due to the treatment. In other examples, outcomes might be measured as lengths, times, percentages, and so forth.
