Which is not a characteristic of life? a) adaptation b) breathing c) homeostasis d) reproduction

Dean has been collecting data on the health risk related to eating too much fast food. which of these would not be a valid conclusion that dean could develop? a) the food in fast food restaurants tastes really good. b) people who eat fast food three times a week are more likely to be obese. c) the chemicals found in the "special sauce" can be linked to acid indigestion. d) eating at fast food restaurants twice a week may lead to increased chance of heart attack.

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.

The greenhouse effect a. something that has occurred for millions of years b. an unnatural phenomenon caused by humans that maintains earths temperature range. c. the results of the differences in the angle of the suns rays d. an unnatural phenomenon that causes heat energy to be radiated back into the atmosphere