If you cut a flatworm in half, both halves can grow into a new individual by fission.
Food is the most important source of chemical energy for living things. The chemical energy in food is converted, or changed, by the body into moving mechanical energy and heat energy. People have invented ways to use the chemical energy of substances to power machines.
Answer:
Veins are blood vessels in humans, and most other animals that carry blood towards the heart. Most veins carry deoxygenated blood from the tissues back to the heart; exceptions are the pulmonary and umbilical veins, both of which carry oxygenated blood to the heart. In contrast to veins, arteries carry blood away from the heart.
Explanation:
23, half of the total. This is because a zygote receives 23 from the mother and 23 from the father.
Answer: South poles will attract the North pole of the magnet and the north pole will attract the South pole.
Explanation:
