Which sentence most likely explains why the rock has large pen pores

Which statement best describes the diffe rence between the sympathetic and parasympathetic nervous systems?

DNA is a macromolecule called nucleic acid (a polymer). What is the monomer (subunit; one part) of DNA called?

Number of chromosomes (not pairs)

What is genetic variation? Select one: a. The selection of desirable traits in individuals that increase likelihood of survival b. The control center of the cell c. Drastic changes to an environment d.

Which of the following is an effect of fossil fuel emissions on oceans

Which statement describes the term "heterozygous"? A) The alleles are the same. B) The alleles are different. C) There is no allele. D) There are two pairs of alleles.

Label the levels of biological organization in order from simplest to most complex

Select the statements that pertain to elements. select all the statements that apply. these combine chemically to form new substances; they are building blocks of matter.

Example and description of the gnetophyta

Does fusion take place in the suns core