Which statements accurately describe the Doppler effect? Select three options.

It is used to learn about the behavior of the universe.
It was used by Hubble to measure velocities of galaxies.
It indicates galaxy motion through light wavelengths.
It indicates a galaxy moving toward Earth through red shift.
It indicates a galaxy moving away from Earth through blue shift.

The hypothesis of continental drift states that earth's continents, which are located on tectonic plates, move relative to each other. which of the following is true of the movement of the tectonic plates? a. tectonic plates only move once every million years. b. they move at a rate of approximately 5 centimeters per year. c. tectonic plates never move, only the continents located on them do. d. their movements are very rapid and occur at random times.

What abo controlling alleles could kim give her child

Is there any solid scientific evidence that humans have been cloned?