Answer:
Immediately, the pathogen has been recognized:
Macrophages acts as the first line of defence by engulfing pathogens identified by antigens which will now present the antibody shape to a helper T cell.
The Helper T cells produce a signal to plasma and Memory B cells to yield antibodies that attach to the antigens. The cytotoxic cells that leads to cell death are activated by the helper T cells.
Antibodies helps to immobilize pathogen for macrophage to feed on.
if the pathogen comes back a 2nd time the memory cells helps in quick and efficient recovery by producing the specific B and T cells for the antigen.
Answer:
All the matter to ever exist was created in the big bang. The amount of space between clumps of matter is increasing, which is allowing the expansion of the universe. There are plenty of conditions for the every matters being created.
Answer:
The factors that would promote the growth of a town into a large city are railways and highways which lend to easy transportation. ... A city's infrastructure can lead to the formation of a heat island because infrastructure such as highways and buildings absorb heat which causes the surrounding area to be warmer.
Explanation:
Brainliest when you can if you will please!!!
Answer:
Troposphere is the correct answer, I believe
