There are 3 sub atomic particles in an atom namely electron, proton, neutron. The charged species is known as ion.
Answer:
Option C
Explanation:
As we know that
Relative humidity (RH) is defined as the ratio of amount of water vapor present in a given sample of air to the maximum amount of water that can be absorbed by the same sample of air to attain saturation at a particular temperature
.
Thus,

Where X represents the current amount of water vapor present in a given sample of air
and Y represents the maximum amount of water that can be absorbed by the same sample of air to attain saturation at a particular temperature
Substituting the given values in above equation we get -

Hence, option C is the correct answer
Answer:
Dendrochronologists have shown that tree-ring data produce a remarkably accurate history of droughts and other climate changes.
Explanation:
The underlying patterns of wide or narrow rings record the year-to-year fluctuations in the growth of trees. The patterns, therefore, often contain a weather history at the location the tree grew, in addition to its age. In dry environments, such as the Middle East or U.S. Southwest, tree rings typically record wet or dry years, and in cooler areas (high latitudes or high elevation), the ring widths are often a proxy for temperature.
Answer:
Hand wave
Explanation:
Transverse wave and longitudinal wave are two types of wave. Some of the examples of a wave are Sound wave, Ocean wave, Light wave etc. The disturbance in a medium is called wave.
Here, Theresa comes up with four examples of waves: Sound wave, Ocean wave, Light wave, and Hand wave. But hand wave is not an acutal scientic wave. It is just movement of hands. There is no transfer of energy takes place. Hence, hand wave is not an actual scientific wave.