Tutor and Freelance Writer. Science Teacher and Lover of Essays. Article last reviewed: 2019 | St. Rosemary Institution © 2010-2020 | Creative Commons 4.0

Functions of the Family

1. Responsible for the addition of new members through reproduction. Society must maintain a stable population in order to survive. Population growth provides a competitive advantage that usually enables a society to become wealthier. 2. Provide physical care for their members, including adults, children and dependent elderly. When families are unable to care for their…

Energy Movement in Ecosystems: Trophic & Energy Pyramid

Organisms can be classified into trophic (feeding) levels depending on how they get their energy. Organisms that get their energy from nonliving sources (sun, organic matter) are called autotrophs (producers) and make up the 1st trophic level. Organisms that get their energy from other living things are called heterotrophs (consumers). Heterotrophs that eat autotrophs make…

Pests and Pesticides

4 Types of Pesticides Herbicides : kills plants Insecticides : kills insects Fungicides : kills fungi Bactericides : kills bacteria First-Generation Pesticides inorganic biocides (eg. Metals such Lead, mercury, arsenic, cyanide) Found to be toxic to humans, polluted water and soil and were not biodegradable (not able to break down naturally). Materials from a non-living…

The Outer Planets: Jupiter, Saturn, Uranus, Neptune, Pluto & Charon

Our solar system is divided into two sections, the first section being the inner planets consisting of Mercury, Venus, Earth, and Mars. The inner planets have rocky crusts, dense mantle layers, and very dense cores. The second section consists of Jupiter, Saturn, Uranus, Neptune, and Pluto. Except for Pluto, the outer planets are gaseous with…