True/False: 35. Many multicellular organisms can break down cellulose molecules.

36. _ Energy flows through an ecosystem in a one-way stream.

37 In the open ocean, food chains are usually shorter.

38. Algae is considered a heterotroph.

39. A scavenger is considered a tertiary consumer.

40. Energy is always recycled.

41. Matter is never recycled.

42. Biogeochemical cycles will sallydhalai indefinitely because matter is never created or destroyed.

43 The largest reservoir of nitrogen is in the hydrosphere.

44. Phosphorus is the limiting nutrient in seawater, whereas nitrogen is the limiting nutrient in freshwater

The human genome project is devoted to mapping the general dna sequence of our species. this could lead to the development of new medicines, as well as the possibility of using gene therapy to treat certain diseases. however, there are some ethical issues surrounding the mapping of individual genomes. one concern is a) that your genes may change over time, making the project useless. b) that insurance companies could discriminate based on genetic make-up. c) that since this has never been done before, we should probably not do it now. d) that sequencing our individual genomes is so expensive, it is a counter-productive strategy.