Why is there more oxygen and carbon dioxide near the surface of the ocean than near the ocean floor? organisms near the ocean floor cannot process these gases, so there is more gas at the surface. the salinity of ocean water traps these gases and prevents them from escaping into the atmosphere. organisms near the surface do not use up these gases, so there is more gas at the surface. the exchange of these gases between water and the atmosphere occurs more readily at the surface.

Despite the differences in mature plant cells, all of them are derived from meristem cells. the three major types of tissue systems develop from the meristem. meristems develop cells in all but which tissue?

Under the soviet system, the government a. controlled all forms of communication. b. allowed newspapers to print whatever they wanted. c. controlled editorials but not the reporting of news. d. encouraged access to a wide variety of news sources. select the best answer from the choices provided a b c d

Which statement is not an accurate description of meiosis? a) meiosis produces offspring that are genetically diverse. b) meiosis produces offspring that are identical to the parent. c) in sexual reproduction half of the genetic material comes from the father (sperm) and half of the genetic material comes from the mother (egg). d) meiosis decreases the number of chromosomes by half so that when a sperm fertilizes an egg, the resulting zygote has the correct number of chromosomes.