Which of the following actions would you take to remain safe in the lab?
check all of the boxes that apply
a bottle of liquid looks like water you taste it to be sure
( while cutting a screen for an aquarium top. you point the scissors away from your body
you pipette a liquid using a bulb pipette
you heat a liquid by placing it in a plastic beaker on a hot plate
you arrange all lab items neatly and make sure they are away from the edge of the lab table.

Based on their location in the atmosphere, the layers are able to have their own special characteristics. for example, most weather occurs in the troposphere. what occurs in each of the other layers? (site 1)

The body is protected against harmful flu viruses by

Read the following scenario to answer the following question. over the past 60 years, many amphibian species have experienced significant population declines, and some species have become extinct. scientists suspected that local human activities such as the destruction of wetlands, regional pollution, and deforestation were the main reasons for these losses. however, research over the past 20 years reveals significant amphibian population declines in protected areas of the world, such as nature preserves and parks. these global declines suggest widespread problems including increased ultraviolet radiation, acid rain, and disease. in switzerland, for example, 14 of the 20 native amphibian species are threatened with extinction. when most populations of a wide-ranging amphibian species are lost and the few remaining populations are widely separated, we expect to see that a. the founder effect becomes increasingly important b. microevolution no longer occurs c. gene flow between populations is reduced d. artificial selection becomes a greater factor in microevolution