Amino acids because here are 29 amino acids in the proteins you eat and in the molecules in your body and they are linked together to form large protein molecules
The moon reflects light from the Sun, and the sun shines on the planets :)
<u>Answer:</u>
Free-living flatworms have developed a nervous system which helps them to sense the food. They have a head at one end of the body and each side of the head has sensory cells. These cells help them to sense chemicals and other movements around them.
While Parasitic flatworms don't have any nervous or digestive system as they live on the food digested by the host. They have special hooks attached to their head which help them to attach a host. They have developed some covering called 'teguments' which protect them from digestive liquids.
Answer:
A protein is a long chain of amino acids folded in to a specific shape
