The table below shows salinity tests from coastal louisiana following a salt water influx during hurricanes katrina and rita. if efforts are not made to reduce the salinity in these areas, what is the most likely long term effect? image shows list of vegetation types with typical salinity ranges and maximum salinity measured. salinity tests data table. data for swamp vegetation indicates a salinity range from 0-0.5 with a maximum salinity measured of 8. data for fresh marsh vegetation indicates a salinity range from 0-3 with a maximum salinity measured of 26. data for intermediate marsh vegetation indicates a typical salinity range from 2-8 with a maximum salinity measured of 26. data for brackish marsh vegetation indicates a typical salinity range from 4-10 with a maximum salinity measured of 34. data for saline marsh vegetation indicates a typical salinity range from 8-29 with a maximum salinity measured of 30. a growth in the population of salt-intolerant types of plants a shift in species composition to less salt-tolerant plants a shift in species composition to more salt-tolerant plants an increase in the diversity of salt-intolerant plants question 15(multiple choice worth 4 points) (04.04 mc) every year, millions of acres of land are cleared by forest fires. which of the following best describes a consequence of these catastrophic events? carbon dioxide levels decrease rapidly in the areas near the fire. population sizes will increase as new species move into the cleared area. invasive species will quickly take over the disturbed area. biodiversity will decrease in the area of the fire. question 16(multiple choice worth 4 points) (04.02 mc) which of the following best explains why the diversity of organisms decreases as you move from shallow seas to deep oceans? the levels of oxygen in the deep ocean are too high for many organisms to thrive. the low temperatures of the deep ocean would freeze most organisms. the salinity of the deep ocean is too high for most organisms to live. the lack of sunlight in the deep ocean limits the types of organisms that can survive. question 17(multiple choice worth 4 points) (04.03 mc) which of the following is an example of how a biotic factor can affect the population dynamics in an ecosystem? lack of water during a drought causes many of the individuals in a population to die. seasonal temperature changes cause a species to migrate between two ecosystems. excessive rain and flooding cause organisms in an area to relocate. the population of a predator increases following an increase in the population of its prey. question 18(multiple choice worth 4 points) (04.03 mc) the chart below describes two different organisms living in the same ecosystem. based on the information in the chart, which of the following is most likely the correct explanation of the relationship of the two organisms? a graph of population over time. population is represented on the y axis. time is represented on the x axis. a blue line is drawn rising and falling up and down over time, representing the population of one organism. a red line, representing the population of the second organism, is drawn rising and falling up and down over time with roughly the same shape as the blue line, but shifted slightly to the left. competitors for the same food predator and prey an invasive species and a native species two types of prey hunted by the same predator question 19(multiple choice worth 4 points) (04.05 mc) which of the following best describes what happens to water molecules after they enter the atmosphere through the process of evaporation? they will cool and form dew, clouds, or fog through condensation. they will combine to form runoff and flow into rivers, lakes, and oceans. they will fall to earth as precipitation in the form of rain, sleet, or snow. they will undergo transpiration and become water vapor. you must check the box below prior to submitting your exam! check this box to indicate you are ready to submit your exam explorer toolbox workload my folders instructors monitor all areas of a student's account student e-mail accounts are to be used for flvs course-related email only and not for general introductions or spamming of people in your address book. remember to click the logoff link when you have completed your work in the course. fdk361.03 previous questionnext question