'R' in science

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

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

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