Answer:
b. the Paleozoic Era
Explanation:
The first vertebrates to appear are primitive fish in the Cambrian Period, but bony fishes with actual bony vertebratae didn't appear for another 100 million years. The Cambrian Period is the first of three periods in the Paleozoic Era. The Cambrian explosion was an event when practically all major animal phyla started appearing in the fossil record.
Answer:
45 kg is the mass of a table that weights 441 newton.
<span>Plate tectonics is the theory that the earth's crust is broken up into plates
that float on top of a hotter and more fluid layer below. Evidence to
support this theory has been uncovered through the study of the earth's
past magnetic field, known as paleomagnetism.</span>
The amounts are the independent boiling water is dependent
Answer:
The three primary factors affect the injury severity of an electric shock: 1) the amount of current passing through the body 2) the duration of the current flow and 3) the current path through the body.
