Which equation has water as a reactant in the chemical reaction?
(a.)na + h2o naoh + h2
(b.)na + cl nacl
(c.)h2 + o2 h2o
(d.)co2 + o2 + energy c6h12o6 + o2

Plz will mark! the diagram shows the positions of the sun, moon and earth during spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

How does a gymnosperm prevent itself from pollinating the same tree

Which is a genetic engineering advancement directly related to a career in biotechnology? 1) improving solar energy collection 2) transporting textiles at higher rates 3)creating crop foods that resist insect pests 4)repairing historical sites with quality materials