Adinida

Seed plants are vascular plants. They differ from the other vascular plants in producing seeds that germinate into a new..

A sensory system is a part of the nervous system consisting of sensory receptors that receive stimuli from the internal ..

Hormones are produced in the endocrine glands of animals. The pituitary gland and hypothalamus are the most impor..

Mutations can also influence the phenotype of an organism. This tutorial looks at the effects of chromosomal mutations, ..

This tutorial deals with the abiotic factors of the freshwater environment that determine what sort of life would be sui..

With regard to the population size of a species and what factors may affect them, two factors have been defined. They ar..

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