Heat death refers to the universe
A) reaching the lowest energy state possible, which will mean the greatest level of entropy.
B) ending after a massive fire.
C) reaching a state where all stars expand and merge into each other.
D) reaching the point where the process of radioactive decay is no longer possible.
Answer: A
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Which is the process that explains how life adapts itself to a changing environment?
a. biological evolution b. environmental duplication c. biological transformation d. natural selection e. genetic reproduction
Which of the following is a general difference between a planet and a star?
A) Stars shine with energy released by nuclear fusion while planets shine primarily with light reflected from stars. B) Stars are found in galaxies, but planets are not part of galaxies. C) Stars are made of gas and planets are made of rock. D) Stars are stationary while planets orbit stars.
The potential difference 
between the wire’s ends
A. A B.B C.C
A wire, 0.60 m in length, is carrying a current of 2.0 A and is placed at a certain angle with respect to the magnetic field of strength 0.30 T. If the wire experiences a force of 0.18 N,
what angle does the wire make with respect to the magnetic field? A) 20° B) 25° C) 30° D) 35° E) 60°