A baby's immune system is not fully developed until he/she is about six months-old. In the meantime, pregnant mothers pass immunoglobulin antibodies from their bloodstream, through the placenta, and to the fetus. These antibodies are an essential part of the fetus's immune system. They identify and bind to harmful substances, such as bacteria, viruses, and fungi that enter the body. This triggers other immune cells to destroy the foreign substance.
Answer:
asexual reproduction
Explanation:
because every single organism in the species is the exact same genetically, there is no variation between them.
<span>These are some distinguished areas in ecosystems that help the humans immensely. Floodplain is area that lies low and is subjected to floods in regular periods making it reduce intensity of floods and improving the stability of the soil. This also improves water quality and ground water making the ecosystem suitable for flora and fauna. Meander unlike floodplain is a broad valley like which is with time develops with bends and helps the ecosystem by reducing the speed of river flow. Delta is the region that is formed around the vast water bodies because of the water flow or the lack of it. It helps the ecosystem by giving protection from natural calamities like floods and hurricanes.</span>
Contour lines do not cross each other because of the variance in elevation between the lines. H<span>owever, an instance where two </span>contour lines<span> intersect occurs when the elevations are simultaneously </span>crossed<span> at an identical point through a vertical ledge.</span><span>
Hope this helps!
-Payshence xoxo</span>
