How long have you been sitting at the computer? Are you stuck to the chair yet? Okay, we don't have to focus on how long you've been sedentary, but when you finally decide to move, how wi...

Basics of Circulatory Systems: Open vs. ClosedAnimals are made of trillions of cells, and each cell in the body needs a supply of oxygen and nutrients in order to survive. To deliver these things a...

Every cell in an animal requires oxygen to perform cellular respiration. Cellular respiration is the process by which animals take in oxygen and exchange it for carbon dioxide and water as waste pr...

At every moment, an animal's body is a beautifully choreographed performance of cells working together. Think of it like it like a theater production with trillions of cast members all on the stage...

Temperature regulation is, perhaps, the most variable and the most noticeable form of homeostasis. All enzymes have their happy place, and in their case, it happens to be a particular reading on th...

Animal MovementOversimplification of the Physics of AerodynamicsAccording to NASA, many textbooks incorrectly describe the aerodynamic principles of flight because they attempt to oversimplify them...

Animal Movement1) If you were a fish (and if all these activities were possible), how would you try to disguise yourself from a fisherman using a sonar fish finder?(A) Curl up your tail fin(B) Swim...

Alerstam, T., & Christie, D. A. (1993). Bird migration (Repr. ed.). Cambridge: Cambridge University Press.Alexander, D. (20042002). Nature's flyers: birds, insects, and the biomechanics of flig...