The amount<span> of guanine </span>always equals the amount of cytosine<span>.
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Hey there!
Pluto crossed Neptune's orbit. However, their paths do not actually cross, they just swap positions.
Hope that helps!
~Autumly
<span>Osmosis is defined as the movement of water across a
semipermeable membrane from high concentration to low concentration. This
occurs when the surrounding environment of the cell has a higher water
concentration than the cell itself. Osmosis is important in animal cells
because it helps in the distribution of nutrients and the release of metabolic
waste products. In plant cells, osmosis is responsible for the absorption of
water from the soil and the elevation of the liquid into other parts of the
plants.</span>
The effector in a negative feedback system acts to counter any changes made to a particular property. If it were positive feedback, it would amplify the change and make it more extreme
The Major function of the respiratory system is to exchange oxygen and carbon dioxide. Inhaled oxygen enters the lungs and reaches the alveoli, the layers of the cells lining the alveoli and the surrounding capillaries are each only one cell thick and are in very close contact with each other, the barrier between air and blood averages about 1 micron in thickness. Oxygen diffuses quickly through the air-blood barrier into the blood in the capillaries. Similarly, carbon dioxide passes from the blood into the alveoli and is then exhaled.
