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This tutorial digs into the past to investigate the origins of life. The section is split into geological periods in the..
Upon fertilization, a zygote forms and develops into an embryo. This tutorial elaborates on the growth and development f..
Developmental biology is a biological science that is primarily concerned with how a living thing grows and attains matu..
Lentic or still water communities can vary greatly in appearance -- from a small temporary puddle to a large lake. The s..
The hominid family diversified from the apes around 6 to 8 million years ago. Since then, the evolutionary path has prov..