What are Elements and Compounds? In order to understand what elements and compounds are, one must first understand what atoms are. Atoms are the basic
Year: 2022
Metals vs. Non-Metals In the world of chemistry, there are elements that are classified as metals and elements that are classified as non-metals. Metals are
Scientific Investigation The scientific investigation is a process of discovery through which scientists uncover new knowledge about the natural world. The secrets of this process
The Body’s Gas Exchange In human physiology, gas exchange is exchanging oxygen and carbon dioxide between an organism and the environment. The respiratory system performs
What is a Solution? In chemistry, a solution is a homogeneous mixture of two or more substances. The substances can be gases, liquids, or solids.
What is an ecosystem? An ecosystem is an environment made up of living things and their physical surroundings. The living things in an ecosystem interact
The Importance of Distinguishing Beneficial from Harmful Microorganisms The human body is teeming with microorganisms, both beneficial and harmful. Many of these organisms are acquired