Which of these is the best example of a positive feedback loop in Earth's climate system?
A. As the number of plants decreases, the amount of CO2 decreases.

B. High clouds have a high albedo and reflect solar energy back into
space.

C. High precipitation results in increased plant growth, lowering CO2-

D. As climate warms, CO2 increases because plants remove less of
it.

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

Use the drop down menus to match each example to the fossil topic discussed then to show how the fossil record gives evidence of evolution

2. sketch the inside of the bean nodule, and describe or label what you observed with the hand lens.