Which of these is a distinguishing abiotic feature of the Great Barrier Reef, the world's largest coral reef?
A. Warm, shallow water
B. Blue skies
O C. Freshwater
O D. Colorful corals

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 of the following is always a reactant in a combustion reaction? oxygen nitrogen hydrogen carbon

What is the percentage composition of carbon in the compound ch4