What primary method does the cell employ to ensure gene expression only occurs when necessary? Limited amounts of specific DNA

Phosphorylation cascade with multiple steps

Receptors that only fit specific hormones

Unique transcription factors made of carbohydrates

They said i have got a sign of tuberculosis what should i do

Describe speciation of the galapagos island finches in terms of geographic isolation

This map shows how climate change might affect precipitation patterns in the great plains of the united states by the end of this century. brown shoes a decrease in percipitation, and blue shows an increase. the maps differ based on the predictive levels of green house emissions. the maps shows that northern area should get a. more pracipations regardless of emmissions b. less pracipation, regardless of emmissions levels c. more precipitation, but only when emission levels. southern areas show a. more pracipations regardless of emmissions b. less pracipation, regardless of emmissions levels c. more precipitation, but only when emission levels. to use these maps to prepare for natural disasters in the great plains, scientist need to ask? a. how many tons of emissions were used at the basis of the map. b. which types of fossil fuels are used in the great plains c. if you think the above is wrong it's probly c the question is cut off