<span>heterotrophic, chitin in cell walls</span>
The two natural resources that will be most affected as people try to meet the growing demand for food are the use of land and water.
<span>Plants take in oxygen all the time for respiration.
Photosynthesis which begins by combining water and CO2, continues in the
"dark phase" in making the glucose molecule. Light is not used for this
part of the reaction so it is called dark , because light is needed for
the first part.
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A simple <em><u>refracting</u></em> telescope uses two convex lenses to gather and focus light from a distant object.
Phospholipids is the answer
