What is the missing part of the chemical equation shown below?
+ base ? salt+water
a. ph
b. acid
c. base
d. h2o

The images show fossils of a modern bird and two extinct organisms (a tyrannosaurus rex and an archaeopteryx). based on the structure of the three organisms, it can be concluded that . the archaeopteryx and bird have wings, while dinosaurs have limbs. so, it can be concluded that .

Pepsin is an enzyme in the stomach that breaks polypeptides into amino acids. pepsin functions best at a ph of around 1.5. what would be the most likely result if the ph of the stomach were increased to 5

Parasitism could be considered a form of which of these types of relationships? -mutualism -commensalism -predator-prey -mimicry