Alexis uses cocaine, which activates her sympathetic nervous system. Expecting her dealer, her hand shake in her heart pounds when she hears a knock on the door. Which alternative below correctly identify as the neutral stimulus, the CS, or the UCS?

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.

explanation:

white blood cells or wbc s are mainly 2 types-

1.agranulocytes

2.granulocytes

the monocytes or macrophages of agranulocytes , dendritic cells which are accessory leucocytes, and b cells which is one type of lymphocytes   identify the antigens present on the pathogen's surface. these three cells are called antigen presenting cells(apc) which are phagocytes and destroy the antigens by secreting antitoxins. besides this leukocyte is always plays vital role in the immunity of the body.

most community's take hundreds of years to become stable

if you know your abc's you should be able to get your answer or just use google