which two processes both increase the amount of carbon dioxide in the atmosphere? a
spontaneous human combustion and photosynthesis
b
volcanic eruptions and cellular respiration
c
photosynthesis and cellular respiration
d
burning of fossil fuels and photosystem II and I
d
burning of fossil fuels and photosystem II and I
The two processes that both increase the amount of carbon dioxide in the atmosphere are:
d) Burning of fossil fuels and photosystem II and I.
To determine the correct answer, we need to understand the processes mentioned in each option and their impact on the amount of carbon dioxide in the atmosphere.
a) Spontaneous human combustion: This is a fictional process not supported by scientific evidence. It does not contribute to the increase of carbon dioxide in the atmosphere. Photosynthesis: This process occurs in plants and some microorganisms, where they convert carbon dioxide into oxygen through energy from sunlight. Photosynthesis decreases the amount of carbon dioxide in the atmosphere.
b) Volcanic eruptions: During volcanic eruptions, large amounts of carbon dioxide and other greenhouse gases are released into the atmosphere. This can contribute to an increase in the amount of carbon dioxide. Cellular respiration: This is the process where organisms, including humans, break down food to produce energy and release carbon dioxide as a byproduct. It increases the amount of carbon dioxide in the atmosphere.
c) Photosynthesis: As mentioned earlier, photosynthesis removes carbon dioxide from the atmosphere.
d) Burning of fossil fuels: When fossil fuels such as coal, oil, and natural gas are burned, they release large amounts of carbon dioxide into the atmosphere. This is a known cause of increasing carbon dioxide levels. Photosystem II and I are two components of the photosynthetic process, which remove carbon dioxide from the atmosphere.
Considering the above explanations, the correct answer is option d. The burning of fossil fuels and photosystems II and I are the two processes that increase the amount of carbon dioxide in the atmosphere.