Fever is an important response to help the organism combat infection, but it has a high cost in terms of energy expenditure. Mammals and birds may therefore lower their temperature instead of raising ...

From the driest deserts to the lushest forests, ecosystems are networks of life where organisms and the environment interact. In this episode of Crash Course Botany, we’ll explore how plants function ...

The life sciences focus on patterns, processes, and relationships of living organisms. Life is self-contained, self-sustaining, self-replicating, and evolving, operating according to laws of the ...

BEAUTY OF LIFE: This computer-generated image illustrating how organisms grow proportionally represents only a tiny portion of image E on the following page. Could it be that the way organisms ...