Incomplete question. The Options read;
a) Is about one-hundred-million years old.
b) Is 4.6 billion years old.
c) Has been here forever.
d) Is less than about one-hundred-million years old.
e) Is more than about one-hundred-million years old.
Answer:
e) Is more than about one-hundred-million years old.
Explanation:
<em>Remember, </em>we are talking about the information available some two to three hundred years ago when there was no modern geological equipment for radioactive elements tracing.
Hence, using uniformitarian calculations from the thickness of known sedimentary rocks, <u>the geologists concluded that the Earth must be more than about one-hundred-million years old.</u> However, modern researchers today have concluded the Earth to be <u>not </u>millions but billions of years old.
movement of charged particles in the outer core
Answer:
Harmful substance are elements that are dangerous to human health. They are water, fruits, food and drugs that are unfit for human consumption. Examples of harmful substances are: Stale food; this is food that is spoil, food that has stayed old is not fit for the body because it is very harmful to the body
Explanation:
