(PLASE HURRY)Which phrase describes estuaries? are made of fresh water only / are areas where rivers flow into lakes/ are homes to unique plants and animals/ are places where all of Virginia’s water drains

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.

Me with these questions if you’re it sure don’t answer

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?