What chemical gets released at the end of a neuron to transmit an impulse to the next neuron?

Convert 9.75 millimeters to centimeters.centimeters

How was the climate when the ambulocetus was alive

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