Answer:
a spider has 4 pairs of legs, since they have 8 legs
There is external and internal so I'll list th external. The most important is skin then mucus, sweat or secretion, hair, nails and tears which are all part of the integumentary. Some internal defenses are white blood cells and T cells.
During nitrogen fixation, bacteria breaks nitrogen gasses down into a usable form for plants.
It decreases the deviation.
<span>Probability principles: The probability of a head/tail occuring stabilies to 0.5 in the long run.</span>
