The jet streams follow the contours of low and high pressure areas (troughs and ridges), which move like waves in the atmosphere across the earth. how does the movement and effects of the polar jet stream change when it is winter in the northern hemisphere?

feral cats are estimated to eat tens of millions of native animals each night in australia

regents of the university of california v. bakke, 438 u.s. 265 (1978), was a landmark decision by the supreme court of the united states. it upheld affirmative action, allowing race to be one of several factors in college admission policy.

1. b.

2. d.

3. a.

5. d.

6. c.

these are the only ones that i know, i hope this , and good luck.