Answer:
oxygen
Explanation:any reaction with burning involves mixing oxygen
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The answer is for sure A. Hope this helped!
Photosystems are the protein molecules that are optimized to harvest light. There are two types of photosystems: photosystem I (PSI) and photosystem II (PSII).
PSI is called P700 and PSII is called P680. It is called P700 because it absorbs the light at around 700 nm wavelength. P680 because it absorbs the light at around 680 nm wavelength.
In non-cyclic photophosphorylation, the photons of light is first transferred to P680, boosting an electron to a high energy level. The high-energy electron is passed to an acceptor molecule and replaced with an electron from water. This splitting of water releases the O2 we breathe.
In cyclic photophosphorylation, the light of wavelength 700 nm is absorbed by P700 and the electrons are the passes to the acceptor molecule by several carriers.
Apartheid was a legal racial separation system that ruled the Republic of South Africa from 1948 to 1993. Apartheid's mechanisms were in place before its creation, and South Africa is still dealing with these issues. Apartheid divided various races into different regions, and discrimination against people of color was not only acceptable, but also legal, with white people having full priority on housing, jobs, education, and political power. Even though South Africa was constantly chastised for the system, it wasn't until 1991 that the legal system of apartheid began to crumble, and it was finally brought down in 1993.
What is Apartheid?
Apartheid has been legally abolished, but whites and blacks continue to coexist in separate communities. There are still "black" and "white" neighborhoods, as well as "black" and "white" churches and restaurants. When the international media writes about Southern Africa, they almost always mention the country's "fading rainbow" and experiment in multi-ethnic democracy .
To learn more about Apartheid from the given link:
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