Answer:
A vertebrate is an animal or species distinguished by its possession of a backbone or spinal column. Vertebrates can be insects, fish, mammals, birds, reptiles, and also amphibians.
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P waves is moved by compressing and expanding.
S waves is form perpendicular angle when they pass.
"Sulla<span> took control of </span>Rome<span> in late </span>82<span> and early 81 BC after victories in the civil war of his own making, and those of his chief legate Pompeius Magnus. ... </span>Sulla<span> not only butchered the constitution through various reforms he would make, but also focused his power on the leading members of the Roman ruling </span>classes<span>." This quote should help!</span>
The correct answer is - Watershed.
The drainage basis are places in which all the water in an area is accumulated and ends up in the same place. The drainage systems are divided by highlands, which can vary from small hills to very high mountains, depending on the topography of the place.
The line on the highland that is separating the drainage systems is called watershed. The watershed is simply a line stretching on the highest parts of a highland, thus having a slope on each side.