Mohammed listed the steps that occur when a solar cell generates electricity. 1: Solar energy is absorbed by the cell. 2: Free electrons move to the front of the cell. 3: Electrons begin to move. 4: Electrons flow as electricity. Which best explains how to correct Mohammed's error? Switch steps 2 and 3. Switch steps 3 and 4. Move step 1 to appear after step 4. Move step 4 to appear after step 1.

How water is moving through the ecosystem ?

Hemoglobin is a proton that carries oxygen around your body what is hemoglobin made from

Which of the following best describes the expensive tissue hypothesis? brains require more energy, so the gut had to be reduced, and larger brains and tool use led to higher quality diets. increasing body size means that homo neanderthalensis had to include more fat in its diet. brains require more energy, so the gut had to be reduced as brains got bigger. brains require more fat, so the gastrointestinal viscera (gut) had to expand, and hands were needed to acquire more food.