Answer: Light
Explanation: Light can travel in empty space or vacuum. It doesn't need any medium to which it travels.
The answer is High-density lipoprotein or HDL. One of the critical elements of HDL is to transport cholesterol from the cells and tissue back to the liver. High HDL-cholesterol is great as it removes cholesterol from cells and the blood and averts overabundance cholesterol. HDL likewise expels cholesterol stored in the dividers of veins.
Their role is as a scavenger.
Asexual is where you dont need a partner and can reproduce on your own and sexually is when you need to partners to reproduce.
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