The term "heavy metals" is used as a group name of toxic metals and metalloids (semimetals) causing contaminations and ecotoxicity. In strict chemical sense the density of heavy metals is higher than 5 g/cm3. From biological point of...

Homeostasis. The health of an organism is influenced by external and internal changes that may lead to the loss of homeostasis. Under healthy conditions organisms compensate these changes. If compensation fails disease ensues. Attention...

The writing of this book is based on: 1. earlier experience writing textbooks for biology students with a university-level background in biology and biochemistry with many (200) ?gures in these books (in Hungarian), 2. and on the...