Which option shows a reaction in which calcium carbonate (caco3) produces calcium oxide and carbon dioxide?
synthesis: cao + co2 →
caco3
double displacement: cao →
co2 + caco3
decomposition: caco3 →
cao + co2
single displacement: caco3 →
cao + co2

Read the following scenario to answer the following question. in some zoos, rare crosses between a male lion and a female tiger have produced hybrid offspring called "ligers." male ligers are sterile but some female ligers are fertile. in the wild, lion and tiger ranges do not naturally overlap, making such a cross unlikely. furthermore, the solitary behavior of tigers and the social organizations of lions create behavioral differences. applying the biological species concept, the sterility of ligers reveals that a. lions are probably a subspecies of tigers b. tigers and lions are the same species c. a new species called "ligers" is forming d. tigers and lions are separate species

Transmission electron microscope are best for viewing a) microorganisms in pond water b) internal organs of a mouse c)internal structures of a cell d) surface features of a specimen

What percentage of light hits earth's surface directly?