Ethology: science that studies animal behavior What it is - biological definition Ethology is a science, a branch of zoology, that studies the behavior of animal species. The main themes studied by ethology are: - Evolution of animal behavior; - Relationship between animals of the same species living in groups (families) or isolated; - Animal behavior with changes occurring in nature (global warming, droughts, flooding of regions, etc.) - Relationship between various animal species in nature; - The relationship and behavior of animals with humans in various situations; - Use of results from animal experiments to advance research on human behavior.

Iguana: A Reptile That Lives in Tropical Regions Key Information and Features: - Iguana is a reptile that inhabits tropical regions of America. We can find iguanas in northern Brazil, Central America and Mexico. They live mainly in forested areas. - Iguana lives mainly in trees.

GH: acts on human growth Introduction (what it is) GH (growth hormone) stimulates the epiphyseal disc and periosteum during the growth phase. It is produced until the age of twenty-one. After this age, its production drops dramatically. Knowing GH (Key Features) This hormone is also anabolic, stimulates lipolysis (weight loss) and acts restoratively within our bodies.

Blue Whale: The World's Largest Mammal Introduction Within the classification of vertebrate animals, mammals are the most important. Females of this species have milk-secreting mammary glands, which is an indispensable food for young mammals. Mammal Information and Characteristics Most mammals have hair, some have partially covered body, while others have hair all over their bodies.

Biophysics: Knowledge of Biology and Physics Improving People's Life What is Biophysics Biophysics is a science that integrates biology studies with the scientific principles and methods of physics. In this science, there is an exchange of knowledge between the two areas in order to create new fields of scientific research such as biomechanics (use of mechanical knowledge in biology).

Salmonella typhi bacteria (magnified image under a microscope) What are salmonella - biological definition Salmonella are non-sporulated and mobile Gram-negative bacteria belonging to the Enterobacteriaceae family. Species This genus of bacteria comes in three species: Salmonella typhi, Salmonella choleraesuis and Salmonella enteridtis.