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. the natural differences in the ranges of wild tigers and lions is an example of

Habitat isolation

Explanation:

It is a type of reproductive isolation between species, also referred to as allopatry, where they are kept apart by geographical barriers such as in this case, the large ranges that do not overlap. The behavioral difference between tigers and lions is a type of sympatry reproductive isolation  where even though the two species encounter frequently, behavioral isolation prevents them from  interspecies reproduction.

explanation:

b,bacteria convert nitrates

into nitrogen gas.

d,plants and animals take in

and use nitrogen compounds.

e,bacteria break down waste    

products and return nitrogen  

to the soil.

a,bacteria convert atmospheric

nitrogen to ammonia.

c,bacteria convert ammonia

to nitrites and nitrates.

for  example, forests have higher evapotranspiration than other ecosystems,  such  as grasslands, because of their deeper roots and greater leaf area. thus forests have a net moistening effect on the atmosphere and become a moisture source for downwind ecosystems.