Consider the given statements:
1. Mawsynram, is the wettest place on earth, situated in Khasi hills of Tripura.
2. Cherapunji is the wettest place on earth located in Mizoram.
Select the correct statement/s:

Arrange the following hills according to their location from north to south:

$1$. Nallamala hills

$2$. Shevaroy hills

$3$. Palkonda hills

$4$. Javadi hills

The property which helps an insect to move on the surface of the water is ______:

Which among the following rivers flows through Tibet and is known as the Yarlung Tsangpo?