The velocity of wind moving past a constant emission source changes from 4 to 2 m/sec.
What is the relative quantitative effect of this change of wind velocity on the pollutant concentration downwind (e. g., inside a city)? Assume the pollutant concentration upwind is negligible compared to the pollutant concentration downwind.

Atsunami usually is the result of a. a nearby underwater earthquake. b. the winter monsoons. c. seismic activity in the eastern pacific ocean. d. hurricane-force winds.

70 pts answer the following questions in full sentences and paragraphs, using at least 150 words, in the essay box below. 1. which organisms are carnivores? herbivores? omnivores? 2. if the ecosystem is balanced, which populations should be the largest? the smallest? 3. imagine a group of hunters kills half of the rabbit population. how will the other organisms be affected? 4. imagine disease kills 85 percent of the wolf population. how will the other organisms be affected? 5. imagine a foreign mountain lion species is introduced into the ecosystem. how will the other organisms be affected?

The inner planets mercury, venus, earth, and mars were formed by