Eliana measures temperatures in an area each day for a week at exactly 2:00 p. m. The temperatures she records are all between 25 °C and 30 °C. Eliana concludes

that the climate of the area is tropical. What is the most important reason why her

conclusion might not be correct?

Imagine you are introducing the lac operan and the trp operon to students who have never learned about it before. complete the table to compare the similarities and differences between the two operons

The first amino acid of a new polypeptide chain is

Which of the following observation darwin shape his concept of descent with modification? a) species diversity declines farther from the equator. b) fewer species live on islands than on the nearest continents. c) birds live on islands located farther from the mainland than the bird's maximum nonstop flight distance. d) south american temperate plants are more similar to the tropical plants of south america than to the temperate plants of europe. e) earthquakes reshape life by causing mass extinctions.