Asap spend time looking at various web sites provided by your teacher, and determine some of the difficulties faced by people as they expanded their countries prior to the advent of modern technology. after studying these sites, be prepared to answer the following question in a 250 word essay: choose a country, and list geographical features that made growth and expansion difficult and what people did to overcome them.

In the following diagram, four different index fossils are labeled: which of the labeled fossils comes from the oldest organism? a b c d

Which measure of humidity, relative humidity or dew point, best describes the actual quantity of water vapor in a mass of air

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?