Select the correct answer from each drop-down menu. will develop pharyngeal arches.
will develop a postanal tail in the embryonic stage.

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?

Match these items. 1. coulombs __force 2. ohms __emf 3. centimeters __resistance 4. newtons __charge 5. volts __length

22. the top of a cliff is located a distance h above the ground. at a distance h/2 there is a branch that juts out from the side of the cliff, and on this branch a bird's nest is located. two children throw stones at the nest with the same initial speed, one stone straight downward from the top of the cliff and the other stone straight upward from the ground. in the absence of air resistance, which stone hits the nest in the least amount of time?