1. A disease has spread among lily pads in a pond ecosystem. Which is true about the immediate impact of this disease?
A. Small fish that rely on lily pads for protection will decrease in population
B. The large fish population will increase
C. The water temperature will decrease
D. The frog population will increase
Food Web

2. What would be true if the rabbit population
Diagram
increased?
A. The bacteria population would increase
B. Hawk population would increase, snake
population would decrease
C. Wolf and hawk populations might
increase, grasses would decrease
D. The grasshopper population would
increase

3. What do the arrows represent in the food web?
A. The transfer of energy from one organism to another
B. Where each organism lives in the ecosystem
C. Which animals eat each other
D. Which organisms receive direct sunlight

Which geologic feature would most likely be represented by contour lines john far apart from one another? a cliff a hill a plain a valley

Suppose that on a small island off the coast of scotland, 32 percent of the population has blue eyes, which means that these individuals must be homozygous for the blue eye color gene (bb). the only other eye color found on the island is brown, and individuals that are homozygous for the brown eye color gene (bb) or heterozygous (bb) will have brown eyes because brown is the dominant gene. assume this population is in hardy-weinberg equilibrium. if 100 babies are born next year, how many of these would you expect to have brown eyes and be heterozygous? a. 58 b. 49 c. 29 d. 43

Astudent from one of the research labs is having trouble preparing a slide for examination and photographing. the bacterial slide that he has brought to you was prepared using a commercially purchased stain. he has asked for your in determining what he is doing wrong so that he can change the lab protocols and continue on with his project. after examining the slide under oil immersion, you determine that no bacteria are present even though the student is able to show you the culture he used to make that slide that has visible growth in the liquid medium. which of the following statements does not explain the fact that there are no bacteria present on the student’s slide? by not allowing a glass slide to completely air dry before heat fixation, the flame will cause the surrounding water to boil and this will damage the bacterial cell. overheating during the fixation step boiled the water within the bacterial cells and resulted in the cells bursting. insufficient heating of the slide did not drive out the thin layer of water and this resulted in minimal bonding between the bacteria and the glass slide. rinsing with alcohol during the washing step stripped the bacteria off the glass slide. rinsing with alcohol during the washing step stripped the bacteria off the glass slide.