Albert Einstein  (1879-1955), German-born American physicist and Nobel laureate, best known as the creator of the spe…

Amino Acids , important class of organic compounds that contain both the amino ( 8 NH 2 ) and carboxyl ( 8 COOH) g…

Monkey (animal) , any of about 160 species of primates that have grasping hands, forward-facing eyes, and highly…

Dogs Dog , mammal generally considered to be the first domesticated animal. This trusted work partner and belo…

Snake (reptile) , legless animal with a long, flexible body covered with overlapping scales. Snakes are reptiles ,…

Dinosaur Dinosaur , one of a group of extinct reptiles that lived from about 230 million to about 65 million ye…

Honey bee in the field Honey Bee From Egg to Adult Honey Bee, common name for any of several species of highl…

Human Nutrition , study of how food affects the health and survival of the human body . Human beings require food …

Density : where m is the mass of a substance and V is its volume Charles’s Law : where V is vo…

Cat, small, mainly carnivorous animal, Felis silvestris catus, member of the family Felidae, popular as a household pe…

We live in the extended atmosphere of an active star. While sunlight enables and sustains life, the Sun's…

Heart , in  anatomy , hollow muscular organ that pumps blood through the body. The heart, blood, and blood vessels m…