lildee16lildee
22.11.2019 •
Biology
Which of the following best describes the trends in atmospheric co2 concentration and antarctic temperature over the past 800,000 years?
atmospheric co2 concentration has remained about the same, and antarctic temperature has varied widely over the past 800,000 years.
a
both atmospheric co2 concentration and antarctic temperature have remained about the same over the past 800,000 years.
b
atmospheric co2 concentration and antarctic temperature are directly correlated over the past 800,000 years.
c
atmospheric co2 concentration and antarctic temperature are inversely correlated over the past 800,000 years.
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Ответ:
The biomass of species at any trophic level is limited by the availability of energy at that trophic level
As we go to higher trophic level, the amount of energy available keeps on decreasing due to ten percent law. Most of the energy is lost in cellular respiration and only 10 percent of energy is transferred to a higher trophic level.
This decreased energy levels limit two things:
the number of trophic levels in a food chain, and the biomass of species at a particular trophic level