The movement of weathered material such as gravel, soil, and sand is called a. chemical weathering b. mechanical weathering c. erosion d. moraine

In the developed world, women are increasingly more likely to delay childbirth until their mid- to late- twenties or long because

Which of the layers of the earth has the following three characteristics? i. it is made of molten rock. ii. it has currents that are constantly moving. iii. earth’s plates float on top of its currents.

The declining axolotl population in mexico city is an example of in overcrowded cities. a. the surpassing of support capacity b. changes to natural environments and native species c. the lack of safe homes and tenured spaces d. the effects of a growing urban heat island