Birds in different environments have a wide variety of beak shapes. some beaks are long, and some are short. some are narrow, and some are broad. some are pointed, and some are dull. what is the best explanation for why birds have such different beaks?

Which of the following is not a characteristic of carnosaurs? a. long narrow skulls b. strong forelimbs c. horn projecting from their skulls d. none of the above

Why reason best illustrates why hershey and chase chose to use viruses in their experiment?

Plz fast biotechnology is a growing field of applied biology. many crops such as corn have been engineered to be resistant to herbicides. therefore farmers can spray these chemicals to kill weeds growing near the crop without worries of killing the crop itself how does this type of biotechnology work? a. by changing the genetic make up of the crops. b. by causing the crops to kill the weeds. c. by changing the type of crops used. d. by changing the location of the crops.