TRUE or FALSE (2pts each) 1. The size of the ball of both baseball and softball is of the same circumference.
2. First aid is necessary for one to learn to protect ourselves from injury.
3. Speed can be measured by manipulating an object.
4. The responsibility of the first baseman is to control the gap between him and the second baseman.
5. Each team in baseball consists of ten players inside the diamond or playing area.​

Juan and carol were studying invertebrates in biology. they knew that segmented or earth worms preferred a dark, moist habitat. during this lab, they would be investigating the responses of organisms called planaria or dugesia tigrina. these were simple flatworms that still had a one-way digestive system and a very simple nervous system. juan and carol placed the planaria in a petri dish containing cool, distilled water that was partially covered with black paper. they shined a light on the dish. next, they removed the paper and placed a small amount of chicken liver at one end of the dish. they added a few large salt crystals to the water. finally, they added drops of hot water to the cool water in the petri dish. their results can be seen in the data table. according to their experiment, all but one conclusion is valid.