Which of the following scenarios refutes the argument that genes are entirely internally influenced? a. patrick possesses a gene for brown hair, but his children have blond hair. b. cindy possesses a gene for freckles, but she uses makeup to cover them up. c. margaret possesses a gene for melanoma, so she chooses to stay out of the sun. d. charles possesses a gene for alzheimer's, but he has not yet experienced symptoms.

The actual answer is C.

Explanation:

From Odyssey: "There are internal and external environmental influences regarding if and how genes are expressed. For an internal example, have you ever noticed that most male birds are more brightly colored than female birds? This is because chemicals only in the males control whether the gene for bright colors is expressed. An example of an external influence is a person who stays out of the sun because they know that they are at risk for developing a deadly type of skin cancer, and their behavior may keep them from getting the cancer."

explanation:

b,bacteria convert nitrates

into nitrogen gas.

d,plants and animals take in

and use nitrogen compounds.

e,bacteria break down waste    

products and return nitrogen  

to the soil.

a,bacteria convert atmospheric

nitrogen to ammonia.

c,bacteria convert ammonia

to nitrites and nitrates.

4.) metal

"-the movement of carbon from the nonliving environment into living things and back to the environment

-carbon is the essential component of proteins, fats, and carbohydrates (which make up all organisms)

-carbon exists in air, water, and living organisms

-producers convert carbon dioxide in the atmosphere into carbohydrates during photosynthesis

-bacteria in the atmosphere cycles through the system in filtration units

-in cellular respiration, carbon is released back into the atmosphere as carbon dioxide

-some carbon is stored in limestone (forming one of the largest "carbon sinks" on earth)

-largest carbon reservoir on earth= limestone

-carbon stored in the bodies of organisms as fat, oils, or other molecules may be released into the soil or air when the organism dies

-this may form deposits of coal, oil, or natural gas (fossil fuels, which increased the atmospheric carbon dioxide)

-fossil fuels store carbon left over from bodies of organisms that died millions of years ago

-they are located in the surface of earth, deep within the earth and beneath the ocean floor."