Are blue eyes a mutation? People with blue eyes have a single, common ancestor, according to new research. A team of scientists has tracked down a genetic mutation that leads to blue eyes. The mutation affected the so-called OCA2 gene, which is involved in the production of melanin, the pigment that gives color to our […]
What are the two mechanisms by which metal deforms?
What are the two mechanisms by which metal deforms? The mechanism by which metals deform is via the motion of linear defects at the atomistic scale, called dislocations (see the figure). In metals, dislocations are usually mobile, and their motion provides for the irreversible shifting of atomic planes in a process called slip, resulting in […]
Which wave is harmful?
Which wave is harmful? The most dangerous frequencies of electromagnetic energy are X-rays, gamma rays, ultraviolet light and microwaves. X-rays, gamma rays and UV light can damage living tissues, and microwaves can cook them. What color can humans not see? Red-green and yellow-blue are the so-called “forbidden colors.” Composed of pairs of hues whose light […]
What was the conclusion of the Miller Urey experiment?
What was the conclusion of the Miller Urey experiment? Miller and Urey concluded that the basis of spontaneous organic compound synthesis or early earth was due to the primarily reducing atmosphere that existed then. A reducing environment would tend to donate electrons to the atmosphere, leading to reactions that form more complex molecules from simpler […]
Can you hear normally with a cochlear implant?
Can you hear normally with a cochlear implant? The implant doesn’t make you hear normally again, but it can help you with sounds. Most people with severe to profound hearing loss can understand speech in person or over the phone better than they did with a hearing aid. It can usually help you know sounds […]
What are the three components of research?
What are the three components of research? research utilizes certain instruments and materials and involves a number of, participants, methods and techniques. All of them are called the research components. of research. This module aims to achieve that objective. literature review, method, results, discussion and conclusion. What is the most important part of a report? […]
What type of image is formed by the concave side of the spoon?
Why do we need to protect ecosystems?
Why do we need to protect ecosystems? Healthy ecosystems clean our water, purify our air, maintain our soil, regulate the climate, recycle nutrients and provide us with food. They provide raw materials and resources for medicines and other purposes. They are at the foundation of all civilisation and sustain our economies. How can we protect […]