Answer: Electromagnetic waves
Explanation: The main property of the waves is the way how they propagate or travel in medium The waves which can travel without a medium is said to travel in vacuum or air.
These are the following answers to the items
cell engulfs molecules in cell "drinking": pinocytosis<span>
molecules helped by protein; move insoluble molecules across plasma membrane: </span>facilitated diffusion
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molecules move in and out freely from high to low concentration: </span>passive diffusion
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cell engulfs microorganisms in cell "eating": </span>phagocytosis<span>
molecules "pumped" in or out from low to high concentration: </span>active transport<span>
oxygen, carbon dioxide: </span>passive diffusion<span>
transports sodium, potassium: </span>active transport<span>
transports glucose, amino acids: </span>pinocytosis
The Nucleolus helps function the cell.
If trash were to somehow appear in the ocean, water would be polluted and animals would be poisoned and die.