Set up the Gizmo: Click Return to original settings and Restart. Coral diseases often crop up in reefs that are already stressed by high temperatures, high nutrient levels, or low pH. To model these conditions, select Ocean conditions. Set the Ocean temperature to 29 °C and Ocean pH to 7.7. Then, select Land use and set Agriculture to 50%. Finally, select Disease and set the Black band infection rate and White band infection rate to 100%. Select the SUMMARY tab. What is the current coral stress level?

Keeping in mind the life cycle of bacteriophages, consider the following problem: during the reproductive cycle of a temperate bacteriophage, the viral dna inserts into the bacterial chromosome where the resultant prophage behaves much like a trojan horse. it can remain quiescent, or it can become lytic and initiate a burst of progeny viruses. several operons maintain the prophage state by interacting with a repressor that keeps the lytic cycle in check. insults (ultraviolet light, for example) to the bacterial cell lead to a partial breakdown of the repressor, which in turn causes the production of enzymes involved in the lytic cycle. as stated in this simple form, would you consider this system of regulation to be operating under positive or negative control?

Which example describes a mutualistic relationship between organisms? young wasps prey on caterpillars. crabs eat the remains of dead fish. tapeworms feed on food in the intestines of cats ants protect a tree on which they feed.

Which are evidence of seafloor spreading? check all that apply. molten material magnetic stripes continent material drilled core samples ocean water samples