Author: Anonymous

Photosynthesis from organisms living in water uses CO2, which affects pH by:

The primary pollutants most closely associated with the formation of photochemical smog are:

Why do landfills burn off gases produced in the decomposition of trash?

You are planning to develop a site for a children’s playground. The site history seems fine and there are no major concerns with previous contamination on the site itself. It is in a mostly residential area but one corner is adjacent to an abandoned industrial site. The industrial site is well secured with fences to keep children out. Which of the following best describes concerns you may have about the playground site?

Use the data in the table to calculate the % mortality and % concentration used in the toxicity study. Graph the dose-response curve for the data in the table. Assume that each concentration exposure starts with 78 live organisms. Based on the dose-response curve graph that you made, the approximate LC50 for this contaminant is:

Using the map above, determine the elevation at the location indicated by the arrow labeled ‘D’?

Which of these resources would you use to calculate %slope across a given location?

The graph above shows the results of a study that compared the the toxicities of Drug A (red squares), Drug B (blue triangles), and the combination of Drugs A and B taken together (purple circles). Based on this dose-response graph, which of the following would be the least toxic?

The soft tissue on the concave side of a thoracic scoliosis is:

Diagnostic characteristic of a patient with ankylosing spondylitis include: