Muscles move bones by _[blank]_.

pulling them

stretching them back and forth

pushing them

relaxing against them

How do the nuclei of covalently bonded atoms keep the bond together

What was the purpose of mendel's experiments with dihybrid crosses? a. to determine if dna was a transforming factor b. to determine if traits could be recessive c. to determine if traits affected each other d. to determine if traits had more than one allele

Which best describes carbon dioxide’s path out of the body