A mutation is a change in the of an organism. A. Environment
B. chromosomes or genes
C. dominance
D. birth rate

You can tell from this karyotype that the individual is female because the karyotype has two chromosomes labeled

Which is an important function of normal flora? a. aid with bone marrow production. b. crowd out pathogenic bacteria. c. destroy digestive track pathogens. d. manufacture iron in the bloodstream.

Match the correct terms to their descriptions a system in which only energy but not matter is exchanged frozen water in snow part of geosphere that includes only soil a thin layer between the troposphere and the stratosphere cryosphere tropopause closed system pedosphere