(02.05 HC) In 2015 in Alaska, an enormous number of walrus females and their calves gathered on a single beach. In the past, the walruses would use sea ice as a place to rest and nurse their calves, but due to human activity and global warming, large amounts of the ice have melted. Explain what consequences could happen to the walruses and their ecosystem in this situation over time. (5 points)

Name 1 way microorganisms are beneficial in the field of medicine.

What are chemical inhibitors produced by microorganisms called? 

(02.06 LC) Researchers have found that plants can help to reduce various emissions, including carbon dioxide, because plants convert carbon dioxide to sugar and oxygen. What is the name of this carbon cycle process? (3 points)

(03.06 MC) What can be said about the diversity of life in the splash zone compared to that of the submerged zone? (3 points)

Antiseptics are usually used where?

(01.01 HC) A group of marine scientists introduced a species of fish into an artificial habitat and wanted to determine whether it will grow well in the new environment. They recorded the population over several years and their data is plotted below. Analyze the data and formulate a conclusion. Does this species of fish do well in this habitat? Predict what will happen to the population over the next five years. (3 points)

You place 1.0 ml of sample into a flask with 99 ml of water. Then you take 0.1 ml of the solution in the flask and put it on a plate. What is the dilution of the sample on the plate?

GRAM-POSITIVEcoccus: Staphylococcus, Lactococcusbacillus: Bacillus, Clostridium GRAM-NEGATIVEbacillus: Proteus, Pseudomonas, Escherichia, Serratia CATALASEpositive: Bacillus, Escherichia, Proteus, Pseudomonas, Serratia, Staphylococcusnegative: Clostridium, LactococcusINDOLEpositive: Escherichia, Proteusnegative: Bacillus, Clostridium, Lactococcus, Pseudomonas, Serratia, Staphylococcus UREASEpositive: Proteus, Staphylococcusnegative: Bacillus, Clostridium, Escherichia, Lactococcus, Pseudomonas, SerratiaSUCROSE FERMENTATIONacid and gas: Bacillusacid: Escherichia, Lactococcus, Proteus, Serratia, Staphylococcusnegative: Clostridium, Pseudomonas Use the dichotomous key above to answer the following questions.Identify the gram-positive, catalase positive rod

Rank the following antimicrobial agents from most effective to least effective for each plate. Overall, which of these bacteria appear to be more susceptible to antibiotics?  Antibiotic .jpg