A Part of the Ocean where sunlight can Penetrate and where most Ocean Organisms Dwell
Dictionary > Photic Zone
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Seed Plants
Seed plants are vascular plants. They differ from the other vascular plants in producing seeds that germinate into a new..
Lotic Communities & Animals
A running water environment offers numerous microhabitats for many types of animals. Similar to plants, animals in lotic..
Birth Control and Contraception
Different pregnancy and birth control and contraception strategies are described. Read this tutorial to learn each of th..
Respiration
The human respiratory system is an efficient system of inspiring and expiring respiratory gases. This tutorial provides ..
Independent Assortment and Crossing Over
This tutorial describes the independent assortment of chromosomes and crossing over as important events in meiosis. Read..
The Origins of Life
This tutorial digs into the past to investigate the origins of life. The section is split into geological periods in the..
