One reactant of photosynthesis is

a. hydrogen.
b. oxygen.
c. carbon dioxide.
d. methane.


c

Physics & Space Science

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A(n) ____ orbit is one where the orbiting object is always above the same location on Earth's surface

a. elliptical b. geosynchronous c. closed d. hyperbolic e. parabolic

Physics & Space Science

A scientific theory can be proven true if the correct experiments are performed

a. True b. False Indicate whether the statement is true or false

Physics & Space Science

White-hot sparks from a fireworks sparkler that strike your skin don't cause injury because

A) they have a low temperature. B) the energy per molecule is very low. C) the energy per molecule is high, but the total energy transferred is small.

Physics & Space Science

Which of these are metric units?

a. grams b. pounds c. seconds d. kilometers e. square miles

Physics & Space Science