Some sixth-grade students are conducting a local survey. they want to find out what activities increased co2 emissions in their community within the last year. ricardo came up with these questions for the survey. which questions are appropriate for the assignment?

what is the average salary of middle school teachers?
how many trees were cut down during the year?
how many new factories opened last year?
how many factories in the community use fossil fuels?
what is being done to keep animals safe in the community?

An ecologist is studying the effects that a population of predators is having on a population of a prey. he used data from the field to produce this graph. which conclusion can draw from the graph?

Keeping in mind the life cycle of bacteriophages, consider the following problem: during the reproductive cycle of a temperate bacteriophage, the viral dna inserts into the bacterial chromosome where the resultant prophage behaves much like a trojan horse. it can remain quiescent, or it can become lytic and initiate a burst of progeny viruses. several operons maintain the prophage state by interacting with a repressor that keeps the lytic cycle in check. insults (ultraviolet light, for example) to the bacterial cell lead to a partial breakdown of the repressor, which in turn causes the production of enzymes involved in the lytic cycle. as stated in this simple form, would you consider this system of regulation to be operating under positive or negative control?

How is transcription similar to translation in terms of base pairing?