Unsaturated and saturated lipids exhibit different characteristics based on their structures. which characteristic is unique to saturated fats?
forms covalent, carbon-to-carbon bonds
is a liquid at room temperature
contains the maximum number of hydrogen atoms
consists of fatty acids and a carboxyl group

The right answer is contains the maximum number of hydrogen atoms.  

A saturated fatty acid is a fatty acid having carbon atoms fully saturated with hydrogen (see figure). Each carbon carries as many hydrogens as possible. We can not add hydrogen to the molecule: it is saturated.

All the bonds between the carbons are simple (no carbon-carbon double bonds).

Saturated fats, a type of lipid, are triglycerides obtained by reacting three molecules of saturated fatty acids on a molecule of glycerol.

Contains maximum of hydrogen atoms.

The saturated fatty acid has only hydrogen bonds and unsaturated fatty acid is double or triple bonds.

The unique feature of saturated fatty acids is that it contains only hydrogen bonds. This means it has maximum number of hydrogen in it as compared to that of the unsaturated fatty acid.

Both consists fatty acids and carboxyl group and forms carbon-carbon bond.

The difference is hydrogen bond present in the saturated fats.

increase soil erosion                                             reduce soil erosion

cattle grazing                                                         hydroseeding

deforestation                                                         contour plowing

                                                                                planting vegetation

plant roots basically hold the top soil

together and stop soil erosion because

in such situation top soil is not removed

during flood but cattle grazing causes

soil erosion because cattle consume the

grasses and herbs and top soil is exposed.

same situation occurs because of

deforestation, the trees and plants are cut

down to expose top soil which causes soil

erosion