A thermometer because it is the only tool that measures temperature.
The cnidarias life cycle has 2 life cycles polyp and medusa
1 endothermic 2 yes and exothermic 3 endothermic
The Jaeger reading cards are used to test near vision. It's usually held by a patient at a certain distance from the eye depending on the size being read. The smallest letters one can read is what determines their visual acuity!
