Which of the following would be a clue that a rock is metamorphic? A It has a complete fossil in it.
B It has gas bubbles.
с It is very soft.
D It has ribbon-like layers, or bands.

Which of these statements best explains why space exploration should be encouraged? it prepares humans to live without oxygen. it dispel myths about objects in space. it prevents comets and asteroids from striking earth. it creates technology to absorb harmful radiations in space.

At the current rate, a graph of carbon dioxide produced by fossil fuels over time would slope upward slope downward be horizontal be vertical

What is the energy in joules of a mole of photons associated with visible light of wavelength 486 nm?