Answer:
D. Facts can be scientifically tested.
Explanation:
Facts are true at all times, or else they are not facts. This means that they will be correct when put against the test, whether in an experiment or through history. If it is not consistent, it is not a fact, but a theory.
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Answer:
hope it helps
Explanation:
The heaviest element found in any appreciable amount in nature is uranium, atomic number 92. (The atomic number refers to the number of protons in an atom's nucleus.) Beyond that, scientists must create new elements in accelerators, usually by smashing a beam of light atoms into a target of heavy atoms.
Answer:
False.
Explanation:
According to research, mechanical advantage “does not account for friction, actual mechanical advantage does.” If it were efficient, it wouldn’t have any energy losses to friction.
