The correct answer is If spiders evolved first, six legs is the derived trait.
The teacher says that the insects have six legs and the spiders have 8 legs, but the spiders derived this trait and evolved prior than the insects.
The student thinks that the teacher is wrong because he thinks, of the spiders evolved first, the the insects must have derived the 6 leg trait later in the evolutionary history. hence, the 6 leg trait should be derived trait, not the 8 leg trait.
The relationship between the percentage increase in fossil fuel consumption and the increase in atmospheric carbon is the relationship linear. The carbon in terrestrial plants grows as the consumption of fossil fuels rises until we run out of coal and oil, at which point it peaks and begins to drop.
Plants must be grown more if there is more atmospheric carbon dioxide to convert into oxygen. Carbon fertilisation is the term used to describe this growth. Models suggest that doubling atmospheric carbon dioxide might result in a need to increase in plant growth of between 12 and 76 percent.
In addition to global warming and making oceans more acidic and endangering marine life, too much carbon in the sky may also "bake" the soil in some areas, speeding up the pace at which carbon seeps out there.
According to the BP Statistical Review of World Energy 2020, around 84% of the world's energy consumption demands are satisfied by fossil fuels, with oil accounting for 33.05% of the consumption in 2019 and natural gas and coal accounting for 24.2% and 27.3%, respectively.
To learn more about atmospheric carbon, refer from
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Cell wall because it protects the cell membrane.
The answer is D since organism x has a n optimal temperature of 37 degrees Celsius and when organisms y enzyme gets incorporated with enzyme x it will increase enzyme’s x temperature therefore enzyme x will denature meaning it will unfold and it will loose its properties hence loosing its activity because its temperature has been altered.