Based on what you know about russian climates, which city would likely be the most difficult to travel to?

Which of the following is a way that advancements in technology improve humans' ability to measure air quality and protect human health?

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 does the plate tectonic theroy describe?