Which of the following is NOT one of the ways that the carbon
cycle adds CO2 to the air?
A. Cell respiration
B. Burning of fossil fuels
C. Cutting down forests
D. Industrial pollution resulting in acid rain

20. in humans, freckles are dominant to no freckles. trey has no freckles and his wife anna grace has freckles, but her dad doesn't. they want to know what percentage of their kids would look like trey. show a punnett square to support your answer.

What molecules will be best used to compare different species with the exact same sequence of amino acids? why would two species have the same protein even if the molecules in question is different? (hint: transcription to translation to protein).

The changes that the students observed, rapid breathing and sweating, would be classified as a to a change in a system.