3. cell wall
The cell wall is a rigid supporting structure.
Answer:
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Explanation:
Multiple births can include fraternal or identical multiples ... This can happen if your body releases multiple eggs and ... Are a twin yourself or have twins in your family.
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Answer:
Proteins and phospholipids make up most of the membrane structure. The phospholipids make the basic bag, while the proteins are found around the holes and help move molecules in and out of the cell.
Explanation:
When sandstone is overlaid by layers and layers of sediment, it becomes subject to enormous pressure and temperature beneath the layers and its grain structure begins to change. The force of compactness causes grain structure and size to reform. This is called metamophism., The sandstone becomes a new rock called quartzite. The two rocks will have different properties. Quartzite will have larger crystals and will be hard and smooth while sandstone will be coarse and soft.
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For more on metamorphic rocks check out;
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