You are a geologist trying to determine the stresses acting on a large, well-defined fault area. you have measured the fault plane, and found its orientation to be 000/55. you know that σ1 is 15mpa and is oriented e-w, and that σ3 is 7mpa and is vertical. draw a diagram to find the value of θ, and then use a mohr diagram to illustrate the stress felt by the fault plane.

explain, you！

Impressions of tropical swamp plants were observed on rocks in polar regions. the impressions were dark black imprints, which means the fossils are examples of ( 1 ) the fossils tell us that polar regions ( 2 ) ( 1 ) a. carbonization b. mineralization c. trace fossils ( 2 ) a. had tropical plants that can grow in ice b. might have had a diffierent climate in the past c. will have abundent vegitation

Compared with the land in the highlands, the lowlands region of england a) rockier and more difficult for farmingb) the center of business and industryc)richer in coal reservesd)covered by more fertile farmland d) covered by more fertile farmland

What was apartheid and how did it restrict the rights of non-whites?