During which period did t. rex reign? a) permian  b) triassicc) jurassicd) cretaceous

What are seismic dampers and why are they important?

Which of the following regions suffers the most from acid rain? a. the area around vancouver c. the area below atlanta b. the area below detroit d. the area above montreal

When you start from a given set of rules and conditions and determine what must be true you are using blank reasoning