3. What does the Earth's magnetic field reveal about the structure of the Earth's layers? That the outer core is solid.
That the outer core is liquid.
That the mantle is solid.
That the mantle is liquid.

The above answer is correct. The answer is That the outer core is liquid.

photosynthesis makes the glucose that is used in cellular respiration to make atp. the glucose is then turned back into carbon dioxide, which is used in photosynthesis. while water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.