The urban heat island effect occurs from the fast heating and slow cooling of __________.

Answer:

the time of the lowest temperature.

Explanation:

Relative humidity simply talks about the ratio of the quantity of water the air contains at any given time, to the highest quantity of water the air could ever have. So when the water vapor content in air remains constant while the temperature falls, then the relative humidity tends to increase. This phenomenon usually takes place in the morning when the sun is yet to come out and the temperature is usually cooler. When sun peaks, afternoon sets in, the relative humidity then reduces.

Final answer:

The point of highest relative humidity is typically associated with the time of the lowest temperature. It happens because as temperature lowers, the air can hold less moisture, thus increasing relative humidity, assuming the amount of moisture in the atmosphere remains constant.

Explanation:

The point of highest relative humidity is typically associated with the time of the lowest temperature, so the correct answer is d. Relative humidity refers to the amount of moisture the air is holding in comparison to the maximum amount of moisture that it can hold at that specific temperature. As temperature lowers in the atmosphere, it can hold less moisture, thus making the relative humidity higher, given that the amount of moisture in the atmosphere remains the same.

Learn more about Relative Humidity here:

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The topography of the seafloor gives us a nice clue about the seafloor spreading. This can be seen in the highest of the underwater features. The mid-ocean ridge is the highest. It is the place where the magma comes out, cools off, and constantly creates new rocks, or rather crust. As we move further away from the mid-ocean ridge, we will notice that the sea mounds are getting smaller and smaller, but also more rounded, or flatter. This is an evidence of the erosion by the water. As the water erodes the crust, it loses on height, thus becomes less pointy, and more rounded or flatter. As we move even further away we will see that there's no more sea mounds, but it is only the old crust that is predominantly flat, which of course has been caused by the millions of years of erosion by the water. This was actually the first thing that has been noticed and that gave a clue to the scientists that maybe the seafloor is spreading, and with the further examinations of it, it turned out to be true.

the answer is B                                                                          ....