How is sex determined in organisms like humans?
a. all of the above
b. the combination of autosomes received from parents
c. the combination of sex chromosomes received from parents
d. the x-linked traits received from the mother

"The combination of sex chromosomes received from parents " .

Explanation:

Sex determination : The process by which sex of a child is determined .

Parental generation :

Mother         Father

XX                   XY (sex chromosomes )

X,X                   X,Y  (gametes )

First filial generation :

       X        Y

X    XX       XY

X     XX       XY

If XX is formed then it is girl and if XY is formed then it is boy .

Conclusion :

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."    

the answer is: metamorphic rocks often show the presence of fossils, also a

hope i

-lavira: )