X-ray crystallography is a technique
that allows scientists to determine the
ionic and atomic radii of elements. which
of these statements correctly describes
a trend in ionic or atomic radii in the
periodic table?

relative humidity is a measure of the amount of moisture in the air relative to the total amount of moisture the air can hold.

so d

sorry i was late, but i don't know what assignment your talking about, i'm in flvs as well, im in earth space science. but u are behind pace bc every class should be in the 3's or 4'

i think   the answer is c hope i'm right

geosphere and hydrosphere.

this is because the geosphere has to do with geological events, while the hydrosphere controls all water on earth.