Weight loss is a common goal among many aduls, and losing woight can be very difficult. There are countiess approaches to consider, but an often-overlooked area is the role of an individuals evironment. Environmental factors can be a good place to start for people looking to Iose weight or prevent weight gain. Which of these statements describe environmental factors that can make it difficult for an individual to loose weight or maintain weight loss? to lose weight or meintain weight loss?
a. decreased portions sizes in restaurarts and movie theaters.
b. increased use of personal vehicles, telephones, and computers.
c. increased number of meals eaten outside the home

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.