Autotrophs flourished, absorbing carbon and light. Soon after, primitive life forms that could assimilate oxygen thrived..
Certain species are capable of expressing characteristics indicative of the state of the ecosystem they occupy. They are..
Organisms employ different strategies to boost its defenses against antigens. Humans have an immune system to combat pat..
Topics Modules Quizzes/Worksheets Description Introduction to Genetics Genetics – Definition: Heredity and ..
Freshwater ecosystem is comprised of four major constituents, namely elements and compounds, plants, consumers, and deco..
Hormones are chemical messengers produced by specialized glands and they were produced by switching on the genes designe..