What's the head structure in mammals made of dead bone and without a covering?

What would be the most likely result if the ph of the stomach were increased to 5

Which of the following shows the results that you would get if you tested beef using the four tests in the gizmo

What contributes to the high level of biodiversity found in wetlands? a. the large amount of available organic matter to organisms that are food for larger organisms b. the amount of available water for organism use c. the high nutrient availability d. all of the above select the best answer from the choices provided a b c d