<span>Substances that must be able to enter a cell are water, oxygen, and nutrients. On TV medical dramas, you'll often see technicians administering a saline drip to a patient who has lost blood or is dehydrated. This saline solution maintains a specific concentration of dissolved substances in the blood and body fluids. When dehydrated, our concentration of dissolved substances increases, upsetting the balance in our cells. Water can freely move in and out of cells to maintain the same water pressure on both sides of the plasma membrane. Oxygen is important because cells are undergoing cellular respiration. A cell takes chemical bond energy and converts it to a form of energy that it can use--a molecule of ATP. ATP contains small amounts of energy appropriate to powering cellular processes. This process of energy conversion requires oxygen (we will discuss this in more detail in Lesson 4). For aerobic cellular respiration to occur inside this cell, oxygen must move through the plasma membrane.</span>
I am not entirely sure what you mean by "responding variable" but I'm going to guess it was the vinegar since it has been used as a perservative for years.
Hope that helps in some way.
Answer:
The epicenter and hypocenter are two important points in causing earthquakes.
Both the epicenter and hypocenter are different from each other in the following basis:
Location: Hypocenter is present within the earth surface where an earthquake rupture starts and the epicenter is located in the earth's crust just above the hypocenter where a seismic rupture begins.
Associated waves: Seismic waves propagate from the hypocenter caused by seismic velocity and rock density which reaches the epicenter where P and S waves hit the surface of earth.
Fission, in biology, is the division of a single entity into two or more parts and the regeneration of those parts into separate entities resembling the original. The object experiencing fission is usually a cell, but the term may also refer to how organisms, bodies, populations, or species split into discrete parts.
Hopefully this helped: )
They are a flat worm
they reproduce sexually
they have eyespots