Muscle cells are specialized to generate force and movement. Learn about the different types of muscle tissues in this t..
Hormones are produced in the endocrine glands of animals. The pituitary gland and hypothalamus are the most impor..
For human species to obviate extinction, reproductive mature adults should be producing viable offspring in order to con..
The diversification of several new species from a recent ancestral source, each adapted to utilize or occupy a vacant ad..
Plants and animals need elements, such as nitrogen, phosphorus, potassium, and magnesium for proper growth and developme..
A still body of water may be disturbed by a variety of factors. One of them is wind. In fact, it is considered as the pr..