Which of the following is not a way that two populations of the same species can be geographically isolated?
(a) newly formed mountain ranges
(b) glaciers
(c) lava flows
(d) individuals in one population mate during a different month than individuals in another population.

Compounds which are found naturally in the earth are called: a. ores b. composites c. rocks d.minerals

17. the soil erosion pictured here is the result of what? a. harvesting renewable resources at a rate greater than the sustainable yield b. a mudslide caused by excessive rains c. harvesting renewable resources at a rate lower than the sustainable yield d. the transition between geologic eras and eons

What type of coastline is commonly found along the western side of the america’s