This tutorial looks at the relationship between organisms. It also explores how energy is passed on in the food chain an..
Lymphocytes are a type of white blood cell capable of producing a specific immune response to unique antigens. In thi..
Apart from vitamins, the human body also requires high energy sources such as carbohydrates and fats. If you want an ove..
Upon fertilization, a zygote forms and develops into an embryo. This tutorial elaborates on the growth and development f..
This tutorial investigates perception as two people can interpret the same thing differently. Know more about human perc..
Plant cells have plastids essential in photosynthesis. They also have an additional layer called cell wall on their cell..