'R' in science

Can you name the R's in these science questions?

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A kind of inflammation of the joints.
Element with atomic number 45
The most common food source on the planet
The element responsible for Curie's death.
The most common viral infectant of the human common cold
A distillation technique involving the condensation and return of vapours
A part of a longitudinal wave in which the density of the particles of the medium is less than the normal density.
A disease commonly associated with dogs and bats
A fractional value representing the ratio of the relative speeds of objects before and after a collision.
A type of surface acoustic wave that travels on solids
A wave whose height is more than twice the mean of the largest third of waves in a wave record
A mammal which primarily digests plant based foods.
When the frequency of an external force matches the natural frequency of the body then the body oscillates with large amplitude.
An evolutionary grade of animals, comprising today's turtles, crocodilians, snakes, lizards, and tuatara,
Organelle associated with protein synthesis
A measure of how strongly a substance opposes the flow of current
The gaining of electrons
From latin 'stiiffness of death'
Physicist widely credited with first 'splitting the atom' in 1917
Another name is equilateral quadrilateral
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Last Updated: Feb 16, 2017

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