When oxygen is released as a result of photosynthesis, it is a direct by-product of

In this exercise we have to have knowledge of photosynthesis and knowing that oxygen is a direct product of the gas exchange of carbon dioxide.

The process of photosynthesis happens when water and mineral salts are removed from the soil through the root of the plant and it ends up traveling through the stem to the leaves in the form of sap, which is called raw sap. The leaf absorbs sunlight through chlorophyll, the substance that gives the green color of plant leaves.

In this way we can say that in the process of photosynthesis we know that oxygen will be the direct product of carbon dioxide.

See more about photosynthesis at  link

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explanation:

cells use diffusion to get substances in and out of themselves. that diffusion will occur across the cell membrane or the outer covering of the cell. because we are talking about the surface of the cell, surface area and volume are  important factors here. as a cell increases in size, its surface area and volume increase as well.  we call that the surface area to volume ratio (sa: vol).  but the catch is that  volume increases at a greater rate than surface  area. in other words, as a cell gets bigger, the sa: vol gets smaller. so a really small cell like bacteria is mostly cell membrane (surface) with very little contents (volume). a really big cell like an egg, is mostly insides with a super thin membrane. so what ends up happening is that the cell cannot efficiently diffuse all of the stuff it needs in/out to survive. therefore cell size is limited to about 100mm. so how do we make organisms bigger than 100mm? cells divide! by dividing and becoming multicellular, organisms are able to grow!   check out the diagrams i attached to see the effect of sa: vol. i hope this ! good luck!