What is the majo difference between sieving and filtration

If two atoms are bonded to a central atom with no lone pairs,how will they be arranged

How many grams of mgbr2 are needed to produce 75g or metal?

What effect would average population growth have on land usage? a. urban use of land would rise to more than 30 percent of available land. b. industrial use of land would rise to more than 30 percent of available land. c. the percentage of available land used as cropland would stay the same. d. cropland would fall to about 10 percent of available land.