Of the different sources of genetic variability, which one could be defined as permanent, transmissible changes to the dna coding sequence often caused by outside environmental factors?

compost can be added to topsoil as a:

pesticide

acceleration = 18/3 = 6 m/s per second.

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-lavira: )

these muscles maintain the blood pressure in the vessels. the smooth muscles are innervated by nerves of the autonomic nervous system. when the muscles contract, they cause vasoconstriction of the vessels and increase blood pressure. when the muscles relax, they enable vasodilation of the   blood vessels hence reduce blood pressure.