Answer:
B
Explanation:
I took the test and got it wrong. but then it showed me the right answer.
3 km in 20 min => 9 km in 60 min => 9km in 1h =>
the correct answer is d: 9 km/h
A real question, one with a question mark?
Answer:
The population of the mice will decrease to the faster, stronger, and smarter mice because the weaker will die because of natural selection.
Explanation:
The magnetic field strength in a coil is directly proportional to the number of turns, or loops, in the coil.
Therefore, when there are four loops instead of one, the magnetic field strength has increased four times, making it harder to push the magnet in.