Answer:
Rods
Explanation:
Rods are specialized photoreceptors that function best in low-light conditions. They are a major part of our vision in dimly lit environments, as well as our perception of movement in our peripheral vision.
The correct answer is -
E. double coincidence of wants
Answer:
B probably I think but I'm not sure
<span>It
is important that antibodies have a symmetrical quaternary structure to create
two identical binding sites for antigens. An antibody is a relatively large
protein having a Y-shape. Plasma cells produce antibodies which are then used
by the immune system to fight off pathogens (e.g. bacteria and virus). The antibody
is able to recognize the antigen of the pathogen. It binds with it either to
neutralize it directly or “tag” the microbe for future attack by other parts of
the immune system. </span>
Stream velocity<span> is the speed of the water in the </span>stream<span>. Units are distance per time ( meters per second or feet per second). </span>Stream velocity<span> is greatest in midstream near the surface and is slowest along the </span>stream<span> bed and banks due to friction.
</span>
