Who benefits from photovoltaic cells? Electricity produced by solar cells is clean and silent. Because they do not use fuel other than sunshine, PV systems do not release any harmful air or water pollution into the environment, deplete natural resources, or endanger animal or human health. Photovoltaic systems are quiet and visually unobtrusive. How long […]
Which of the following is the primary function of osteoclasts?
Which of the following is the primary function of osteoclasts? Osteoclasts are large multinucleated cells with a myeloid lineage, which have the function of clearing away mineralized and calcified constituents of the bone matrix which are aged or damaged. What happens through the action of osteoclasts? Osteoclasts resorb bone through the production of proteolytic enzymes […]
In which nebula do we live?
What weighs more vodka or water?
What weighs more vodka or water? Dense materials sink, and less-dense materials float. Water is denser than alcohol, so the alcohol floats on top of the water. In higher temperature, the density is lower. Does alcohol and water mix? Because water molecules are polar, any liquid that does not have polar molecules—such as oil—is usually […]
Is a compass reliable?
Is a compass reliable? Overall, Consumer Reports gave the 2018 Compass a reliability rating of 11%, the lowest of all SUVs in its segment. The 2019 and 2020 models of the Compass have a higher predicted reliability score of about 3 out of 5, but that may change as owners drive their Compasses around some […]
Does the mass of the satellite have any impact on its orbit?
Does the mass of the satellite have any impact on its orbit? The mass of the satellite definitely affects where it stays in the orbit (leo, meo or geo). Gravitational force between two objects is directly proportional to the product of their masses and indirectly proportional to the square of the distance between them. Does […]
What do you mean by real and virtual image?
What do you mean by real and virtual image? A real image is the collection of focus points actually made by converging rays, while a virtual image is the collection of focus points made by extensions of diverging rays. In other words, it is an image which is located in the plane of convergence for […]
What type of natural selection has occurred?
What type of natural selection has occurred? Types of natural selection: Different types of natural selection can impact the distribution of phenotypes within a population.In (a) stabilizing selection, an average phenotype is favored.In (b) directional selection, a change in the environment shifts the spectrum of phenotypes observed.In (c) diversifying selection. Is natural selection true? Natural […]
What are the 3 assumptions of science?
What are the 3 assumptions of science? Understanding science: scientific assumptions Nature is orderly, and the laws of nature describe that order. We can know nature. All phenomena have natural causes. Nothing is self evident. Knowledge is derived from acquisition of experience. Knowledge is superior to ignorance. Do scientists make assumptions? All scientific tests involve […]
Why is cadmium bad for you?
Why is cadmium bad for you? Cadmium and its compounds are highly toxic and exposure to this metal is known to cause cancer and targets the body’s cardiovascular, renal, gastrointestinal, neurological, reproductive, and respiratory systems. Where is cadmium most commonly found? Sources of cadmium It is most often found in small quantities in zinc ores, […]