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This tutorial elaborates on the effect of light on plant growth. It describes how different plants require different amo..

Water Cycle
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The water cycle (also referred to as the hydrological cycle) is a system of continuous transfer of water from the air, s..

Genetic Mutations
Chromosome Mutations – II

This tutorial is a continuation of the first lesson on chromosomal mutation. Here, find out the chromosomal aberrations ..

Types and Causes of Brain Damage
Types and Causes of Brain Damage

This tutorial describes the different types and causes of brain damage. Find out how genetics, physical injury, lack of ..

"Cronopio dentiacutus", a prehistoric mammal (an illustration)
Mammalian Ancestors

Mammals are a diverse group of organisms, where most of them develop their offspring within the uterus of the mother. Ov..

Fossil trilobite imprint in the sediment

There are more species of insects than any other species combined. This surely illustrates that insects have the selecti..