17 points science ! the original source of energy in fossil fuels is a-oxygen b-dead plants c-rocks d-the sun

Match the examples to the correct level of organization. 1. system level roses, snakes, puppies 2. organism level roots, stamens, leaves 3. tissue level bone, cartilage, blood 4. organ level heart, veins, arteries

What substance is the most acidic. lemon juice. tomato juice. sodium hydroxide. water

Which of the following cell structures is significantly different between gram- positive and gram-negative bacteria?