Choose the correct word from the drop-down menu to complete each sentence. is dark, highly decomposed organic matter found in soil.

is a mixture of materials that holds moisture and drains well.

contains coarse grains and allows water to drain quickly.

contains medium grains and retains water.

contains fine grains and has little space for water.

14. complete and balance the equations for the single displacement reactions. a. zn + pb(no3)2 -> b. al + niso4 -> 15. complete and balance the equations for the double displacement reactions. a. agno3(aq) + nacl(aq) -> b. mg(no3)2(aq) + koh(aq) -> 16. complete and balance the equations for the combustion reactions. a. __ ch4 + o2 -> b. __ c3h6 + o2 -> c. + o2 ->

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

Which best describes the present-day universe? opaque, expanding very slowly, stars produce heavy elements transparent, expanding at an accelerated rate, stars produce heavy elements opaque, expanding at an accelerated rate, stars produce only hydrogen and helium transparent, expanding very slowly, stars produce only hydrogen and helium