To be transported throughout the body in the bloodstream, fat molecules must be bound to protein molecules, why is that

Urea, co(nh2)2, is manufactured on a large scale for use in producing urea-formaldehyde plastics and as a fertilizer. what is the maximum mass of urea that can be manufactured from the co2 produced by combustion of 1.00 x 104 grams of co2?

What does x represent in the formula for the compound xcl4?

What natural processes produce large quantities of co2