Geologists apply various methods to study the layers of the Earth. Which of the following is a method used to study the Earth’s layers a:Scientists use seismic waves to map the atmospheric conditions above Earth's crust.

b:Scientists map seismic waves to determine the atomic structure of materials that lie beneath Earth's surface.

c:Scientists measure vibrations of Earth's surface using a compass (an instrument that is sensitive to Earth's magnetic field).

d:Scientists measure the time it takes for seismic waves to reach a seismograph (an instrument that measures seismic waves).

When studying the calumet region of illinois and indiana alfred meyers noted four stages of development as new groups occupied this land in stage 2 farmers used the land primarily to grow food for their familes and their small communities

Read the following quote from the nature conservancy, “the 3 billion people who live in poverty around the world will be hardest hit by climate change. the poor are more dependent on natural resources and have less of an ability to adapt to a changing climate. diseases, declining crop yields, and natural disasters are just a few of the impacts of climate change that could devastate the world’s most vulnerable communities.” from this quote, what group of people is most vulnerable to climate change? those who depend on industrialized nations people who are able to adapt to changing conditions people living in central america people who are living in poverty

Which season has the least amount of rain in the northern latitudes