The correct answers are:
b. Human influenza a virus evolves escape variants, resulting in a distinctive cactus-shaped phylogeny.
All types of Human influenza viruses evolve to escape immunity induced by prior infections and vaccinations.
c. Measles experiences strong selection for escape variants, resulting in a phylogeny similar to a nonpathogenic species.
As a result of measles infection, specific antibody and CD4 and CD8 T cell responses are generated and contribute to virus clearance and protection from reinfection.
Smooth ER<span> also regulates and releases calcium ions and processes toxins. It is described as '</span>smooth<span>' to distinguish it from rough </span>ER<span>, which has ribosomes for protein synthesis on its surface. Each organelle in the cytoplasm of a cell is responsible for performing a certain function.</span>
The following that helps organisms in keeping their shape are the bones and the skeletal muscles. The bones serve as the framework of the body. The skeletal system supports all the other systems and along with the skeletal muscles, they give the shape of the body. The skeletal muscles are muscles that are attached to the bones for the voluntary movements of the body.
Answer:
the light need to move for longer distance so the energy it have decreases
