The average conversion energy from producers to primary consumers is _______.a.1%b.10%c.50%d.100%
Which of the following statements about energy and trophic levels is not true?
Put the following organisms in an aquatic food chain in the order in which energy flows through them, explaining the reason for their placement.small fish, mammal, phytoplankton, zooplankton
phytoplankton, zooplankton, fish, mammal Phytoplankton are producers, so they produce their own food by using energy from the sun. All other organisms in a food chain obtain energy from other organisms, either producers or other consumers. Zooplankton feed on phytoplankton, so they would obtain their energy from the phytoplankton. Some small fish species feed directly on zooplankton, obtaining their energy from the zooplankton. Some species of aquatic mammals feed on those fish species.
Cycles are essential to all living organisms.
A quaternary consumer species would be expected to have a smaller population than a secondary consumer species.
It is advantageous for a predator to prey exclusively on a single prey species.
not
While trees are not the largest level in the pyramid of numbers, they are still the base for both the pyramids of biomass and pyramids of energy.
Moving through trophic levels _______.a.energy decreasesb.entropy increasesc.biomass decreasesd.all of the above
Actinobacteria sp. are organisms called chemoorganohetereotrophs. They do not use oxygen to breathe. They break down organic material and convert it to inorganic material.Which part of the carbon cycle does this describe?
Actinobacteria sp. are organisms called chemoorganohetereotrophs. They do not use oxygen to breathe. They break down organic material and convert it to inorganic material.Which part of the carbon cycle does this describe?
Which of the following statements about the phosphorus cycle is true?
What is a possible consequence of fertilizer runoff in aquatic ecosystems?
Fertilizer runoff can negatively impact aquatic ecosystems. When fertilizer is introduced into aquatic ecosystems it can cause phytoplankton to multiply rapidly. Large increases in the number of phytoplankton can cause the oxygen in the water to be depleted, leading to suffocation of the organisms in the water.
If predators A and B prey upon the same species and predator A is eliminated, the population of predator B will likely __________.
Explain what distinguishes primary and secondary consumers.
Hibernation is _______.
Explain how the elimination of a predator from an ecosystem might result in starvation amongst its prey species.
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