Different microbes are adapted to enter the body in various ways; each way into the body exists called a portal of entry.
<h3>What is portal of entry?</h3>
The way a virus enters a vulnerable host is referred to as the portal of entry. The pathogen's or toxin's active tissues must be accessible through the portal of entrance. Infectious pathogens frequently use the same portal they did to leave the original host when they join a new host.
A cavity in the body or a wound that allows an infectious disease to enter, such as mucous membranes, open wounds, or tubes implanted there like feeding or urine catheters. The mucous membranes, non-intact skin, the respiratory, gastrointestinal, and genitourinary tracts are only a few of the entry points for infectious organisms into the body.
Hence, Different microbes are adapted to enter the body in various ways; each way into the body exists called a portal of entry.
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The relationship between predator and prey is bepending on each other. If the prey disappear then predators would start to disappear but if there's a lot of prey them more predators but if there was more prey than predators then the prey would over populate I guess you can say so they prey,predator thing needs to be balanced
Plants release nectar which attracts birds to come and eat. As the bird eats the plant pollen (plant sperm) will get on the bird, and travel with it to other plants were the pollen will falls off and impregnates another plants due to plants having both female, and male bodies thus causing cross-pollination. This happen thru natural selection because the plants has nectar and pollen due them wanting to be able to spread and have more offsprings.
Sex-linked trait, to remember hemophilia is passed on through the X chromosome which is why males are more susceptible to sex-linked traits because they only have 1 X chromosome and women have 2