What is one reason that abiotic factors are important in an ecosystem? A. They provide necessary nutrients to the organisms.
B. They provide cold weather for organisms to thrive.
C. They provide food directly to all organisms in an ecosystem.
D. They provide the renewable resources that humans need.

Read these sentences from the text. near the equator, the tropics receive the most rain on a consistent basis. as a result, the fresh water falling into the ocean decrease the salinity of the surface water in that region. [. .] . . as the salt content of sea water increases, so does its density. what can you infer about how rain affects the density of surface water near the equator?

Which type of substance ionizes partially and gives off hydrogen ions when dissolved in water? a. strong acid b. strong base c. weak acid d. weak base

Which element has the lowest electronegativity? calcium(ca) gallium(ga) selenium(se) bromine(br)