Classify each reactant and product in this reaction as an acid or base according to the brønsted theory. Hf+h2o↽−−⇀f−+h3o+.

Analyze the analogy and read the information below it. fish : fin : : bird : wing if you were reading this aloud, you would say, "fish is to fin as bird is to wing." this analogy uses parts of an animal to relate to the whole animal. much like how a fin a fish move, so does a wing a bird move. which analogy also uses parts to relate to the whole? sky : blue : : dirt : brown flower : petal : : tree : leaf car : road : : boat : water food : sandwich : : sport : softball

The authors use the word “backbone” in lines 3 and 39 to indicate that

The different forms of a gene for a given trait are called .