the himalaya mountains were built the two plates in the earths crust collided millions of years ago .the place collide and build a new surface feature like these mountains is called a

answer

i think the answer is a) as air pressure in an area increases, the density of the gas particles in that area decreases.

hope it

1 a

2 d

3 a

4 c

explanation:

periodic trends is an atom that gets larger as the number of electronic shells increase, the radius of atoms increases as you go down a certain group in the periodic table of elements. in general, the size of an atom will decrease as you move from left to right of a certain period.