Diseases that can be controlled by are considered environmental health concerns. a.
improving sanitation in large urban areas
b.
treating water
c.
manipulating the environment
d.
providing adequate health services to screen for and control diseases
e.
all of the above

Which number represents a basic ph, 4 or 9? numerical answers expected! answer for blank 1: i'll give

This is a biological reaction due to a stimulus. i need this quickly !

The table below shows the elements that mainly comprise each of the four layers of earth: elements in layers layer main elements crust oxygen, silicon mantle iron, magnesium outer core iron, nickel inner core iron which of these elements make up the layer that is 0.2 to 1.1 percent of earth's total diameter?