The correct answer is frequency.
The pitch can be defined as the quality of sound produced by the rate of vibration producing it.
It is directly related to the the frequency of the sound wave. If the frequency is increased then its pitch will also increase and vice versa.
As for normal people it is a bit difficult to differentiate between the two but the musician are trained so they can differentiate the difference between the two even if the difference is 2 Hz
Doctors inject medicines in veins because veins are more accessible and donot have high pressure due to which there is no risk of blood backing up with into the infused fluid.
However there are some cases when medicine is injected in artery but a lot of precautions needs to be taken while doing so.
When the soil is dry, it wouldn't be easy to make a footprint so the soil must be moist. Later, the print would harden and that preserves the footprint.
Overall: soil is moist.
Pine tree with mycorrhizal<span> fungi - the fungi that help our forest trees survive and thrive!</span>
