Answer:
The plasma membrane, or the cell membrane, provides protection for a cell. It also provides a fixed environment inside the cell, and that membrane has several different functions. One is to transport nutrients into the cell and also to transport toxic substances out of the cell.
Explanation:
Answer:
B
Explanation:
Diamond is the highest on the hardness scale, while quartz is lower, only a diamond can scratch a diamond
Answer: The two elements found in sand are silicone and oxygen.
Explanation:
Sand is a granular substance that contain different smaller pieces of rocks and minerals. It is formed fromm weathering of rocks or breakdown of larger particles of rock into smaller pieces. Silicon dioxide or silica is a compound found in sand and also glass. Silicon dioxide is the chemical formula of sand. Silicon dioxide is formed when silicone reacts with two molecules of oxygen to form silicon dioxide. The major elements in sand is silicone and oxygen.
Answer:
Knowing others is intelligence; knowing yourself is true wisdom. mastering others is strength; mastering yourself is true power. if you realize that you have enough, you are truly rich, "And the cause of not following your heart, is in spending the rest of your life wishing you had."
