Animals must solve the general challenges of life
Animals despite their varying evolutionary histories and varying complexity must solve the general challenges of life in obtaining food, oxygen, nourishing themselves, excreting waste products, and their movement from place to place. Animals inhabit almost every part of the biosphere. Despite their great diversity, all animals must solve a common set of problems.
Animals of diverse evolutionary histories and varying complexity must solve these general challenges of life. Animals despite their varying evolutionary histories and varying complexity must solve the general challenges of life in obtaining food, oxygen, nourishing themselves, excreting waste products, and their movement from place to place.
Basic concepts such as Form and Function; Organs and Organ systems; Metabolism – a set of chemical reactions to harvest and use energy; Bioenergetics – how organisms obtain, process, and use their energy resources; Homeostasis – steady state or internal balance, helps us to understand the common principles which underlie various life processes. Anatomy is the study of the structure of an organism and Physiology is the study of the functions an organism performs. Natural selection can fit structure to function by selecting, over many generations, what works best among the available variations in a population.