B. The amount of sleep students received before the exam
The energy pyramid (also called ecological pyramid) quantifies the energy transfer from one organism to another along the food chain. Energy decreases as you move through the levels from the bottom to the top of the pyramid.At the bottom are the p<span>roducers which bring energy from nonliving sources (sun) into the community (photosynthesis).
</span><span><span>After the producers (above them) are the primary consumers. They eat the producers, which makes them herbivores. Above them are the s</span><span>econdary consumers. They eat the primary consumers, which makes them carnivores. And at the top are the </span><span>Tertiary consumers.</span></span>
Yes they can because the catalyst does not take part in the chemical reaction and remains unchanged after the reaction has ended. Biological catalysts are known to be recycled by the bodies in which they work.
When using a dichotomous key you look for the QUALITATIVE and QUANTITATIVE attributes of your specimen. Qualitative meaning the simple appearance such as color or the size. Quantitative meaning height, wings or no wings, tail or no tail, etc.
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