Give three examples of reproductive barriers AND Explain how these barriers could lead to
speciation over a long period of time.

temporal isolation which causes the two populations of one species are isolated this way, they no longer reproduce with each other due to differences in mating times, ecological isolation which implies reproductive isolation of populations inhabiting separate niches as a result of divergent selection of ecologically influenced characters, and behavioral isolation which occurs when populations of the same species begin to develop different behaviors that are not recognized or preferred by members in another population.

b. the carbon cycle ensures living things have a source of hydrogen

ans.

gregor john mendel is known for study of inheritance in pea plants. he used garden pea plant for his study, having alternative traits for various characters. he performed cross-breeding in pea plants to check how characters are transmitted between parents to offspring, such as cross between pure tall and pure dwarf plant. mendel studied the inheritance patterns in pea plants for various generations.

thus, the correct answer includes options and f).