Which “main” layer of the Earth contains the least mass? please explain

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

Which of the following is true of all geographic locations on earth?

The pacific islands that lie along tectonic plates may have volcanic activity are uninhabited may not have agricultural economies are located in the tasman sea