Which of the following items will be attracted to the north pole of a permanent magnet by a magnet force?

The solar eclipse occurs when

The smallest functional and structural unit of kidney is called as

Nitrification means

The major ingredient of leather is

Glass is made from the mixture of

When water evaporates, it ________ heat energy and ________ the surrounding air.

When the moist, humid air moves into an area, the barometer will be _______.

When air is heated enough so that it is warmer than the surrounding air, it is ________.

We are likely to have our highest relative humidity ________.

Water that stays in liquid form at temperatures below freezing is termed ________.