What is the limiting factor in how large land animals can become?

Question

Quizplus · Accepted Answer

As the size of an animal increases, its volume increases faster than its surface area. This means that the surface area to volume ratio decreases, making it more difficult for nutrients and gases to diffuse across the animal's body. As a result, the animal is limited in how large it can become because diffusion can't keep up with the needs of an increasingly large body.

What Is the Limiting Factor in How Large Land Animals