A researcher wants to experiment with an element that reacts like phosphorus (P) but has a greater atomic mass. Which element should the researcher select for the experiment? Nitrogen (N)
Sulfur (S)
Arsenic (As)
Silicon (Si)

How do diseases caused by bacteria and diseases caused by viruses react to antibiotics?

Some birds look for food near cattle and other livestock. the movement of the cattle churns up the ground, making insects available to the birds. the cattle appear to be unaffected by the presence of the birds. what kind of relationship exists between the birds and the cattle? o a. parasitism o b. commensalism o c. predation o d. mutualism

The protein(s) that are the major contributors to plasma osmolarity is/are