How do microorganisms affect soil formation?
a. by releasing toxic chemicals into the soil
b. by increasing the nutrient content of soil
c. by improving porosity via movement through the soil
d. by releasing chemicals that react to form soil particles

Put each tile to the correct location. categorize each term as something that is typical of a scientific theory, a scientific hypothesis, or both. 1) scientific theories 2) both 3) scientific hypothesis a). a tentative statement used to guide scientific investigations b). makes predictions about future events c). can be tested many independent researches d). based on observations of natural phenomena e) . a well-established highly reliable explanation