Someone thinks if they have much money, they will have happiness. However, other people's opinions are t____ different.
已知黑斑蛇与黄斑蛇杂交,子一代既有黑斑蛇,又有黄斑蛇;若再将F1黑斑蛇之间交配,F2中既有黑斑蛇又有黄斑蛇。下列结论中正确的是( )
下列有关生物多样性和进化的叙述中,不正确的是( )
在等差数列an中,a9=12a12+6,则数列an的前11项和S11=( )