The fur coat of california sea lions can be different shades of brown due to genetic variation. suppose that the frequency of each fur color changed in a population as shown on the graph below. how do you expect the population trends to change after 2009 if changes in the aquatic environment make dark brown sea lions more reproductively successful than sea lions with light brown coats? the percentage of dark brown sea lions will increase, and the percentage of light brown sea lions will decrease. the percentage of light brown sea lions will increase, and the percentage of dark brown sea lions will decrease. the percentage of dark brown sea lions will increase, and the percentage of light brown sea lions will increase. the percentage of light brown sea lions will decrease, and the percentage of dark brown sea lions will decrease.

You have been asked to lead a demonstration for the undergraduate microbiology lab course about the uses of negative staining when studying bacteria. a "negative" stain does not stain the bacterial cell itself but stains the space between cells. under magnification, the acidic (negativelycharged) nature of the stain will be repelled by the negatively charged bacterial cell wall and willleave the cell colorless in a stained background. negative stains are used primarily to reveal the presence of negatively charged bacterial capsules; therefore, they are also called capsule stains. encapsulated cells appear to have a halo surrounding them. the negative stain procedure does not require heat fixation, which limits any chances of alteration in bacterial cell shape and size. the bacterial suspension is added to a drop of stain, such as nigrosin or eosin, and drawn across the glass slide using a coverslip.nigrosin staining-not safranin staining-of klebsiella pneumoniae will allow for the visualization of the cell shape and the determination of the presence of a capsule.true/false

Dr. kaylan is an ecologist who studies bird behavior. she sets up an experiment to test which type of food crows are most likely to eat when given a choice between walnuts, corn, and sunflower seeds. to perform her experiment, dr. kaylan places three food bins in an area frequented by cows. each bin contains one of the three food types. then, she measures how much of each food type is eaten every day for a month and summarizes the results of her experiment in the pie chart below. based on her results, dr. kaylan concludes that crows choose to eat corn more frequently than other food sources because it has a higher nutritional value. what is a reasonable alternate conclusion that can be drawn from dr. kaylan's data

Drag each tile to the correct box. arrange the layers and faults from oldest to youngest.