<span>the force that causes the molecules on the surface of a liquid to be pushed together and form a layer
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surface tension
SURFACE TENSION
VERY SIMPLE!!
PLEASE MARK BRAINLIEST
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An acid is a substance that releases hydrogen ions in solution. It has a pH of less than 7. Bases release hydroxide ions.
Answer;
-In the smooth ER
In certain kinds of muscle cells, calcium ions are stored in the smooth ER.
Explanation;
-The smooth endoplasmic reticulum is the part of the endoplasmic reticulum (ER) which does not have ribosomes bound to it, thus not exhibiting the bumpy appearance shown by the rough endoplasmic reticulum.
-The smooth ER is important in the synthesis of lipids, such as cholesterol and phospholipids, which form all the membranes of the organism. In addition it is important for the synthesis and secretion of steroid hormones from cholesterol and other lipid precursors.
<span> barriers such as dead skin cells and mucus</span>
It is true that dead zones in waterways can occur as the result of fertilizer runoff.
