The answer would be ions
The gradient of ion concentration from intracellular compared to the extracellular will determine the resting potential of the cells. The movement of the ion itself will induce the action potential in nerve cells. Natrium/sodium and Kalium/Potassium ion have a big role in this mechanism.
A. an ecosystem comprises a community and the abiotic environment.
Answer:
97% of american farms are family opertaed.
Explanation:
Diastole is the relaxation phase of the cardiac cycle. It is the normal rhythmic dilation of the heart's valves. During this time, the valves start to gather blood inside of their chambers. There are two types of diastole that occur in the heart, and they are:
1. Ventricular diastole - this is the period where the ventricles are filling and relaxing.
2. Atrial diastole - the period in which the atria are relaxing.
This is a continuous cycle that occurs in the heart the moment a person is conceived until the person meets his/her death.
Answer:
A and D.
Explanation:
Sharks gills are located on the side of their bodies while on the other hand, Skates have gills that are located in underneath of their mouth. In sharks , large spiracles are present on the ventral sides of shark's head whereas in Rays or Skates, spiracles are large in size and located on the dorsal side of their head. Spiracles is an external respiratory opening, located behind the eye of a cartilaginous fish.
