Acertain species of salamander was split into two populations by a wide, dry valley, and the populations?
and the populations began to diverge from each other. after a period of time, some members of the two populations began to interbreed in a hybrid zone at the southern end of the valley. only weak reproductive barriers existed by this time, so the two populations could freely interbreed and re-establish gene flow. this outcome in a hybrid zone is known as 1)speciation 2)reinforcement 3)fusion 4)punctuated equilibrium 5)stability

Why have the countries of the region had difficulty establishing democratic governments in recent years? choose all answers that are correct b is also correct i need to know if theres any morecommunists have overtaken the countries of the caucasus region. the soviets established national borders in the region without considering the location of ethnic groups. fighting continues between armenia and azerbaijan over the nagorno-karabakh region. civil war between communists and islamic groups in tajikistan resulted in thousands of deaths and refugees are forced to flee. in a test!

How does the bare soil surface type affect the amount of runoff

Which topic would a meteorologist most likely research? -meteors in space -marine ecosystems -atmospheric conditions -the runoff of stream systems