The answer is camouflage<span> it means to disguise the presence of (a person, animal, or object)</span>
Answer:
Mechanical barriers — which include the skin , mucous membranes , and fluids such as tears and urine — physically block pathogens from entering the body. Chemical barriers — such as enzymes in sweat , saliva , and semen — kill pathogens on body surfaces.
The shortened form of the unit that Kevin's bag was weighed in would be Lbs.
The correct answer is option A,
Reason - The density of outer core is less than the density of inner core density and thus among all the given options the more probable answer is option A
