Which of the following distinguishes a theory from a hypothesis?

a.
a theory is much more speculative than a hypothesis.

b.
a hypothesis can be tested by experiment, but a theory cannot.

c.
a hypothesis can be shown to be wrong, but a theory cannot.

d.
a theory explains far more phenomena than a hypothesis.

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what do the different brain waves do?

explanation:

brainwaves are produced by synchronised electrical pulses from masses of neurons communicating with each other. brainwaves are detected using sensors placed on the scalp. brainwave speed is measured in hertz (cycles per second) and they are divided into bands delineating slow, moderate, and fast waves.

the earth is thought to have been formed about 4.6 billion years ago by collisions from a cloud of hydrogen, helium, rock, ice and other materials. these were pulled together by gravity to form objects in and around earth like- asteroids and small early planets called planetesimals.

so, the best possible answer to this question will be option d- to harden materials to form different parts of earth’s layers