You LOVE spinach. This morning you heard on the news that E. coli O157:H7 has contaminated 90% of the spinach crops in your area. E. coli 0157:H7 is a pathogenic strain of bacteria that has acquired a gene that produces a toxin that gives people hemorrhagic diarrhea.
You are bummed because you CAN'T live without your spinach! You recently began working in a lab that has a PCR machine that you can use. Explain how you could use PCR to determine if
the spinach you have is infected with E. coli 0157:H7 or not.

the element that provides strength to the exoskeletons of clams and oysters is phosphorus.

this is so because calcium carbonate is the main component in the shells. calcium carbonate is strengthened by phosphorus.

explanation:

surface mining destroys mountain tops, landscapes, forests and wildlife habitats. on top of that, it leads to soil erosion and destruction of agricultural land. the landscape changes can also disrupt river channels and streams, which leads to flooding. which, can destroy plant life and other animals as well.

explanation:

cuz he's blad

explanation:

if your own plato the answer is b. the fern transitioned from sporophyte generation to gametophyte generation.