Answer:
Alana put mailed 2 letters in each of the 3 mailboxes
Explanation:
Answer:
a theory in biology that includes one or both of the statements that the cell is the fundamental structural and functional unit of living matter
Answer:
The xylem is one of the two types of tissue transported from the vascular plants, the other being the phloem.
A. Immune
Langerhans cells , also known as
accessory cells, are antigen-presenting cells of the skin. It functions by
processing antigen material and and present it on the cell surface to the T
cells of the immune system. The cells process microbial agents to be fully
functional antigen-presenting cells. It is similar to blood monocytes.
<span>Increasing rates of work will increase the energy demand of the body. To fulfill the energy needs, the heart needs to pump more blood.
The rate of blood pumped by heart is known as cardiac output while stroke volume is the amount of blood pumped each contraction. It is calculated by: heart rate x stroke volume
The easiest variable to changed to increase the cardiac output would be heart rate. When a person increases his </span><span>rates of work, the heart rate will be increased to increases the cardiac output so the heart can supply the energy needed.</span><span>
</span>