Biology, 15.01.2020 07:31, gracerhodes4305
If the flow of energy in an arctic ecosystem goes through a simple food chain, perhaps involving humans, starts from seaweeds to fish to seals to polar bears, then which of the following could be true?
question 45 options:
a. polar bears can provide more food for humans than seals can.
b. the total biomass of the seaweeds is lower than that of the seals.
c. seal meat probably contains the highest concentrations of fat-soluble toxins.
d. seal populations are larger than fish populations.
e. the seaweed can potentially provide more food for humans than the seal meat can.
Answers: 3
Biology, 21.06.2019 17:20, owensdonld
The trp operon in e. coli regulates genes that code for enzymes required for synthesis of the repressible operon. when tryptophan is not available amino acid tryptophan. the trp operon is a in the environment, the trp repressor protein activeinactiveregulated. therefore, rna polymerase can bind to the genes to begin transcription.
Answers: 1
Biology, 22.06.2019 13:00, dogisreallyeggroll
Describe the impact of deforestation of both abiotic and biotic factors within the tropical rainforest.
Answers: 2
If the flow of energy in an arctic ecosystem goes through a simple food chain, perhaps involving hum...
Mathematics, 10.12.2020 23:30
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