Answer:
Convection occurs through the movement of particles. As particles become heated, the molecules move faster and faster, and as molecules move apart, density decreases. The warmer, less dense material rises compared to the surrounding cooler, higher density material.
Explanation:
The triplet of basis on the DNA and mRNA is known as a codon. It's a code for a specific amino acid.
<u>Pressure increases with depth </u>
Explanation:
Pressure increases with depth because the molecules at the deeper end are compressed by the weight of the above column of the fluid. Compression means there are more molecules of the fluid per volume in the deepest place than the surface. More molecules mean more pressure.
This is why divers need special gear when diving deep in the ocean to protect themselves form increased water pressure. In addition, the lowest atmospheric layers have the highest pressure because they are more dense and bear the weight of the above air column. This is why air pressure is a bit lower up the summit of a mountain than at its base.
"The oxytocin in blood stimulates the pituitary to secrete more oxytocin" is the way among the following choices given in the question that <span>the level of oxytocin is controlled by a positive-feedback mechanism. The correct option among all the options that are given in the question is the second option or option "B".</span>
