Animal Form and Function: Nutrition and Digestion https://youtu.be/exdSZXNzLko

In this video I discuss how animals obtain energy and nutrients from food via the digestive system. Animals are heterotrophs since they feed on other living organisms for energy and organic compounds.

Animal Form and Function: Water and Salt Balance https://youtu.be/62f3xi8BCZs

In this video I discuss how animals regulate their body fluid composition. Vertebrate animals have kidneys which filter out blood plasma and expel the waste as urine through the urethra. In contrast, aquatic animals have diverse fluid compositions relative to their environment.

#science #biology #nature #education #animals

Animal Form and Function: Principles, Thermoregulation, and Energy Consumption https://youtu.be/hL58kMBsiws

In this video I discuss the main principles that govern an animal's form and interactions with its environment. 

#science #biology #nature #education #animals

Animal Diversity: Sponges, Chordates, Vertebrates, Blastulation, Food Chain https://youtu.be/4SV5Ep-cFEY

In this video, I discuss the wide variety of animals, which are multicellular eukaryotic organisms. Animals, including humans, almost universally consume organic material, breathe oxygen, and develop from a hollow sphere of cells called the blastula. 

Evolutionary Biology: Speciation, Reproductive Isolation, and Hybrids https://youtu.be/u_ygO92LgmY

In this video, I explain speciation, the process by which one lineage splits into two independent lineages that evolve separately. For speciation to occur, reproductive isolation is required, which can result from physical barriers (like geographic separation) or genetic incompatibilities.