Answer:
Photosynthetic organisms
Explanation:
The electromagnetic energy of sunlight is converted to chemical energy in the chlorophyll-containing cells of photosynthetic organisms. In eukaryotic cells these reactions occur in the organelle known as the chloroplast
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Answer:
centripetal force is a net force that acts on an object to keep it moving along a circular path and elastic force acts to return a spring to its natural length
Answer:

Explanation:
M = Mass of planets
R = Radius of circle
v = Velocity
= Angle
The circle is inside the triangle

The centripetal acceleration

The speed of the stars is 
Answer:
radiation heat.
Explanation:
That is any heat that passes through the air, like the sun.