A student has decided to start a group in their community to improve water quality. A friend tells them that the stream near their home is polluted with trash, paint, and chemicals. Which situation is the most likely source of the pollution?
pet waste
oil spill
storm drain
runoff from erosion
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If jane has the blood type ab and marries john who has type o blood what are the possible phenotypes of their first kid?

Cpr, or cardiopulmonary resuscitation, is a first-aid technique to save lives. it involves compressions of the patient's chest cavity. which description is the best description of the functions of chest compressions in cpr? chest compressions are done to pump the heart. chest compressions are done to strengthen the rib bones. chest compressions increase carbon dioxide inhalation. chest compressions allow the patient's muscles to wake up.

Suppose you are provided with an actively dividing culture of e. coli bacteria to which radioactive thymine has been added. what would happen if a cell replicates once in the presence of this radioactive base?