Question 2 A) Why do warm ocean currents begin at the equator? (1 point)
There is a concentration of magma roing at the equator?
The volcanic activity at the equator heats up the water?
The equator receives more direct and intense sunlight, warming the water,
Heat rises from the southern pole and is warmest in the middle of the globe,

What are the genotypic and phenotypic ratios

Explain that newton first law,second law and third law of motion?

Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) → h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 °c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)