<span>Choices (b) and (c) are the most correct. Bilateral symmetry requires a central axis for there to be two halves. In addition, this type of symmetry requires a head, which will encounter the environment before any other part of the body and move in the direction of travel. Most animals exhibit this characteristic.</span>
Less than 4% of the world's water is fresh water and 2/3 of it is underground
I believe the answer is spores..
Yes the answer is B. chlorination
Http://histologyolm.stevegallik.org/node/124
this should help you