A drought will occur in the area where the birds that mentioned in the previous questions live. Below you will see the graph of how this drought is predicted to change the availability of food in the area. How do you predict this will affect the variations that we see in the beaks of the bird population overtime? How do adaptations and natural selection explain the changes?

Place the steps tor the formation of the enzyme pepsinogen in correct order

Which best describes how the common cold spreads in the human body? a bacteria burst out of normal cells killing them b viruses replicate inside respiratory cells c bacteria inject dna into normal cells d viruses insert dna into bacteria

Group control group #1 experimental group yes yes yes control group #2 no new drug orange juice bed rest no yes no yes ves which of the following is the best explanation of why a second control group was included in this experiment? o a. to provide the volunteers in the study with something to drink o b. to prove that the common cold cannot be cured c. to confuse anyone who is trying to steal their new drug and sell it as their own invention o d. to researchers conclude that results are related to the new drug and not to the orange juice submit e previous