Answer:B
Explanation:
In C3 plant fixation of carbon occurs rubisco the Calvin cycle enzyme that add CO2 to ribulose bisphosphate to produce a three carbon compound 3-phosphoglycerate.
C4 plants have an alternate mode of carbon fixation that forms a four-carbon compound as its first products. In C4 plants there are two distinct types of photosynthetic cells; bundle-sheath cells and mesophyll cells. The Calvin cycle is confined in the chloroplasts of the bundle-sheath cell.
In the first step of this mechanisms an enzyme present only in the mesophyll PEP carboxylase adds CO2 to PEP to form oxaloacetate a four-carbon products.
The four-carbon is exported to the bundle-shealth cells where it releases CO2, which is reassimilated into organic material by rubisco and the Calvin cycle. The same reaction regenerate pyruvate. ATP is used to convert pyruvate to PEP, allowing the reaction cycle to continue.
In C4 plants ATP is the price for concentrating CO2 in the bundle-shealth. C4 photosynthesis has higher ATP requirements than the C3 pathway.
The total productive areas in which a population, a person, or a product competes are tallied as ecological footprint. It gauges the ecological resources needed by a particular population or product to produce the natural resources it consumes (such as plant-based food and fiber products, livestock and fish products, timber and other forest products, and space for urban infrastructure), as well as to absorb its waste, particularly carbon emissions.
<h3>What is ecological reserve/deficit?</h3>
An ecological deficit happens when a population's ecological footprint exceeds the biocapacity of the space that population has access to. If a country has a national ecological deficit, it is either importing biocapacity through commerce, selling off its ecological resources, or releasing carbon dioxide waste into the sky. When a region's biocapacity surpasses its population's ecological footprint, an ecological reserve is created.
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Held together by hydrogen bonds between pairs of bases.
I think it’s F, c, and a.
Answer:
The lithosphere is the solid, outer part of the Earth. The lithosphere includes the brittle upper portion of the mantle and the crust, the outermost layers of Earths structure. It is bounded by the atmosphere above and the asthenosphere (another part of the upper mantle) below. Although the rocks of the lithosphere are still considered elastic, they are not viscous.
Explanation:
