User: Roger is studying how energy from the Sun changes to chemical energy in plants and to mechanical energy in animals. He is studying _____.
quantum physics
chemistry
biology
thermodynamics

User: Plants are unique because they have _____, which absorb light energy from the Sun.
plastids
vacuoles
chloroplasts
mitochondria

Weegy: how can i help you ? User: what is the sum of the interior angles of a triangle
User: An equilateral triangle is a Weegy: The area of any equilateral triangle always an irrational number.
The area of any triangle in square units is 2 bh where b is the base-length and h the perpendicular height of the apex from the base. We can find h by Pythagoras' theorem ... [ which equals 3/2. The area (?bh) is therefore equal to 3/4 square ... (More)

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