Ascientist should be willing to change his theory if the evidence does not support it.
a. true
b. false

It is absolutely true that a scientist should be willing to change his theory if the evidence does not support it. The correct option among all the options given in the question is option "a". The scientist has to back up his theory with evidence, otherwise the theory is considered as false. to arrive at a successful conclusion, a scientist must be willing to change his theory when required.

Yes you are cute answer theories to explain the colonization of the new world the last great habitable landmass to be occupied by humans focus on the bering land bridge, or beringia, which emerge by siberia and alaska the last ice age.

Answer:

american political culture includes a plenty of focus views and preferences. not all westerns experience the same opinions, of course, but the large preponderance promises to these general ideas, including equality, justice, freedom, individualism, integrity, and difference.

explanation:

the united states is a democratic republic. residents elect representatives to governmental, nation, and local administration; those deputies create the regulations that command u.s. community. although emptiness in u.s. law needs it, in usage, the administrative system is ruled by executive factions.