Which of the following events may introduce changes in behavior that can be attributed to learning? A hunger
B. illness
C. puberty
D. eating

Pressure and heat that's what i think( don't report if wrong)

Hello!   ==i would say:   spring tides are the highest, while neap tides are the lowest.==hope this ! : )

Some connecting rods have to lubricate the cylinder wall or piston pin. the answer is letter d. graphite coating can be a major  additive to many  coating  systems and things such as connecting rods.  it functions as a refractory, lubricant, thermal conductor, and electrical conductor for a machine or thing to enhance its work.