Answer: indirect
To measure great distances such as interplanetary we will use indirect uses of measurement.
<span>The adrenal gland produces a hormone called aldosterone. Without this hormone, Na+ cannot be reabsorbed from the urine, and K+ cannot be secreted into it. K+ will build up in the blood, and Na+ will be lost in the urine.</span>
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Oxygen will diffuse from an area of higher concentration (outside the cell) to an area of lower concentration (inside the cell). </span>
Bro plans are not that hard we were on animal reproduction and just moved on to plant