Explanation

Answer:

Radionuclides (or radioactive substances) are a type of chemical substance whose atomic nucleus is unstable. They achieve stability through nuclear fission (spontaneous fission, emission of alpha particles, or conversion of neutrons to protons, or vice versa).

Explanation

MRI, and the detailed images it produces, has been a huge benefit for the study of the brain.

Its greatest innovation is allowing us to see which parts of the brain have been damaged while a patient is still alive.

Explanation

A vertebrate is an animal with a spinal cord surrounded by cartilage or bone.

  Vertebrates include birds, fish, amphibians, reptiles, and mammals.

Explanation

 non-metallic minerals are:

• limestone
• mica
• gypsum
• coal
• dolomite
• phosphate
• salt
•  granite.

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while

Ores of iron, aluminum, gold, and silver are examples of metallic minerals. Diamond, slat, potash, etc.

Explanation

Separation of water or sand or cement from freshly mixed concrete is known as: Segregation.18-Feb-2019

Explanation

Short-sightedness is caused due to elongation of the eyeball

 It also may result when the curve of the cornea is too steep. 

The messages sent from the retina to the brain are perceived as blurry

Explanation

Vertebrate is an animal of a large group distinguished by the possession of a backbone or spinal column, including mammals, birds, reptiles, amphibians, and fishes.

Explanation

Spherical shape is because drop always tends to acquire minimum surface area due to the surface tension, and for a given volume, the surface area of sphere is minimum.

Explanation

Explanation

Sodium Bicarbonate is the monosodium salt of carbonic acid with alkalinizing and electrolyte replacement properties