This planet is second from the Sun. It is named after the Roman god of beauty.
Considered for a long time as Earth's "twin". It is covered in clouds. What is it?
O Mercury
o Mars
O Venus
O Jupiter

Mercury bc it is melting and getting closer

The independent variable is the type of music.the dependent variable is the pulse rate.the intervening variable is the age of the subject.if the mother does not like rock, her pulse is likely to not increase.the same might be true for the sister.the friend may like rap and gets excited.to establish cause/effect relationship, all of the subjects must be consistent.hope i .

Its trait is different and it the organism survive