Which of the following is a neutralization reaction? a
Ca(OH)2 + 2 HCl → CaCl2 + 2 H2O

b
CaCl2 + 2 Na3PO4 → Ca3(PO4)2 + 6 NaCl

c
4 FeS + 7 O2 → 2 Fe2O3 + 4 SO2

d
SnO2 + 2 H2 → Sn + 2 H2O

Which ocean zone has the most abundant primary producer and why a) the abyssopelagic zone ,du to the absence of light and cold water temperatureb) the bathypelagic zone, due to the absence of light and cold water temperaturec) the mesopelagic zone ,due to uts high light availability and warm water temperature d) the epipelagic zone, due to its high light availability and warm water temperature

Building glycogen from glucose molecules is an example of

Precision can be defined as the o exact center of a data set. o reproducibility of a measured value. o correlation between two variables that are measured in a data set agreement between a measured value and an accepted value.