A farmer is analyzing cross sections of his land to determine where to build a well.
Which phrase describes the best area to dig down to the groundwater?(It wasn’t A)
-where the saturated zone is 15 meters deep
-where the water table is at 100 meters deep
-where the unsaturated zone is 50 meters thick
-where there is a 25-meter thick clay layer at the surface

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

Ras is a g-protein that is activated when a growth factor attaches to egfr. its activation results in the replacement of a gdp molecule with a gtp molecule, thus allowing a signal transduction pathway to be activated. considering the signal pathway illustrated on this page, what is one potential outcome of a mutation in the ras gene that leads to ras protein hyperactivity. be specific.

Many organizations release indexes used to measure the development of the world's countries. as we learned in this lesson, these indexes measure many factors, from life expectancy to happiness. in your opinion, what are the three most important factors we can use to determine how developed a country might be? explain your answers in a few sentences.