Carapace

Hard outer covering or case of certain organisms such as arthropods and turtles...

Plant cells have plastids essential in photosynthesis. They also have an additional layer called cell wall on their cell..

This tutorial digs into the past to investigate the origins of life. The section is split into geological periods in the..

Geological periods is a study guide that cites the different geological periods on Earth's timeline. Each has a brief ov..

Upon fertilization, a zygote forms and develops into an embryo. This tutorial elaborates on the growth and development f..

Dinosaurs represented a major turn in the evolutionary development of organisms on Earth. The first dinosaurs were presu..

Physiology is the study of how living organisms function. Thus, human physiology deals specifically with the physiologic..

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