Hydrogen is a likely candidate in the search for a replacement for petroleum. however, removing hydrogen from water requires the investment of a great deal of energy. why are plants considered to be one step ahead in the utilization of hydrogen as an alternative fuel source?

because of their water splitting enzymes

Explanation:

Based on the information provided within the question it seems that plants would be considered to be one step ahead in the utilization of hydrogen as an alternative fuel source because of their water splitting enzymes. These enzymes are used in the plant's photosynthesis process to break down water into it's base elements of hydrogen and oxygen. Thus easily being able to collect their own hydrogen which is one of the biggest problems for using hydrogen as a replacement for petroleum.

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muslims have taken his goods and products to different parts of asia an indonesia. sometimes just traveled and trade, but in other occasions, stayed in the place and made a living.

trade was the key for muslims economies to prosper. their commerce routes reached far places like malaysia and java in the 11th century.

another important factor for prosperity was that muslim states served as the middle point for european traders.

they used to travel by land but sailing the seas -the indian ocean- really increase the exportation of products.