'R' in science

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

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

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