Homogeneous system in chemistry, a system whose parts cannot be mechanically separated, and is therefore uniform throughout and possesses in every part identically physical properties; e.g., a solution of sodium chloride in water...
Plants and animals need elements, such as nitrogen, phosphorus, potassium, and magnesium for proper growth and developme..
Hormones are produced in the endocrine glands of animals. The pituitary gland and hypothalamus are the most impor..
This tutorial describes the independent assortment of chromosomes and crossing over as important events in meiosis. Read..
Meet some of New Zealand's unique fauna, including endemic insects, frogs, reptiles, birds, and mammals, and investigate..
Stems primarily provide plants structural support. This tutorial includes lectures on the external form of a woody twig ..
Upon fertilization, a zygote forms and develops into an embryo. This tutorial elaborates on the growth and development f..
