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Taking a Closer Look at the Earth's Three Divisions
The biosphere is the outermost part of the planet’s shell- including air, land, surface rocks and water – within which life occurs.
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Solutions and Colloidal Dispersions
Solutions and Colloidal dispersions are types of mixtures which are considered very important in the world we all exist and live and within our own bodies as life process. We have blood that transports nutrients and oxygen to our cells and urine that carries away wastes products.
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Retirement Through A Woman's Perspective
Sometimes it's important to work for that pot of gold. But other times it's essential to take time off and to make sure that your most important decision in the day simply consists of choosing which color to slide down on the rainbow. ~Douglas Pagels, These Are the Gifts I'd Like to Give to You
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The Theories and Behavior of Gas
Gas is one of the three forms of matter. Every known substance is either a solid, liquid or gas. These forms differ in the way they fill space and change shape. A gas, such as air, has neither a fixed shape nor a fixed volume and has weight.
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Chemical Calculations (Stoichiometry)
The branch of chemistry, which deals with the numerical relationships of elements and compounds and the mathematical proportions of reactants and products in chemical transformations, is known as stoichiometry.
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Chemical Reactions and Chemical Equations
A chemical reaction transforms one or more substances into a set of different substances. The substances that enter into a chemical reaction are called reactants and the substances formed are the products.
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Chemical Nomenclature and Chemical Formulas
Chemistry is involved with various and diverse interactions of matter either around us or simply inside the laboratory. These are described using the language of chemistry, which consists of symbols, formulas and equations.
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The Wonders of the Periodic Table
If all the elements are arranged in the order of their atomic weights, a periodic repetition of properties is obtained. This is expressed by the law of periodicity. — Dmitry Ivanovich Mendeleev
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Atoms and Atomic Structure
Matter is composed of very small ultimate particles, or atoms of matter.
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All About Matter: An Introduction to the Basics
Matter is anything that occupies space and has mass. Learn about matter and energy, the four physical states, the properties of matter, and the laws governing matter.
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Understanding the Reasons of Silence
“I need to be alone. I need to ponder my shame and my despair in seclusion; I need the sunshine and the paving stones of the streets without companions, without conversation, face to face with myself, with only the music of my heart for company.” - Henry Miller
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Measurement: The basis of all scientific work
Measurement is the process of finding out how many units there are in something. The basis of all scientific work is measurement. There are various units of measurement depending on what we wish to measure.
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General Chemistry
Through the ages, man has learned many things about himself and his environment. However, it was not until he was able to record his discoveries and observations that modern science began. Early scientists started organizing and classifying their discoveries and observations. From this, evolved the...
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Chemical Bonding: How Do Atoms Combine? What Forces Bind Atoms Together?
The atoms of molecules are linked together through a reaction known as chemical bonding.
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All Humanity Is in the Grip of a Global Environmental Crisis
The danger posed by war to all of humanity - and to our planet - is at least matched by the climate crisis and global warming. I believe that the world has reached a critical stage in its efforts to exercise responsible environmental stewardship. UN Secretary General Ban Ki-moon
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The Alarming Issue of a Warming Earth
There is not going to be, we can be quite certain, there’s not going to be any action on reducing greenhouse gas emissions by China or India or Indonesia or Brazil unless all developed countries are making a major effort. It will still be a big job to get them in, even if we are all making the...
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The Human Skin: The largest organ of the Integumentary System
The human skin is the largest organ of the integumentary system which is made up of multiple layers of epithelial tissues that guard underlying muscles and organs.
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What is Cell Division?
“It is not always the magnitude of the differences observed between species that must determine specific distinctions, but the constant preservation of those differences in reproduction.”― Jean-Baptiste Lamarck
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Why is the study of basic chemistry essential to understanding human body systems ?
Life substances are substances, which contain the life or food, which vivifies and sustains. But those who fail to receive these life-giving substances will, sooner or later, realize their necessity … Carlos Kosel
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The Spinal Cord and Its Importance
The spinal cord is a long, cable-like structure made up of hundreds of nerve fibers, which is approximately 17 inches (42 cm) long. The brain and the spinal cord compose the central nervous system.
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The Amazing Facts About the Brain
“The vast majority of us imagine ourselves as like literature people or math people. But the truth is that the massive processor known as the human brain is neither a literature organ or a math organ. It is both and more.” ― John Green
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Life Sciences: Its Historical Background
In questions of science the authority of a thousand is not worth the humble reasoning of a single individual. - Galileo Galilei
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What Are These Mental Traps Which Lead Everyone To Denial, Indifference and Inaction in Saving Mother Earth?
“Something will have gone out of us as a people if we ever let the remaining wilderness be destroyed ... We simply need that wild country available to us, even if we never do more than drive to its edge and look in.” – Wallace Stegner, The Sound of Mountain Water
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The Art of Positive Reinforcement?
“Praise is better than punishment” ---Thomas McDaniel
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Creating Health
Creating health is an exciting plan for us to improve our lives and at the same time be more grateful to God who loves us unconditionally.
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Infusing Climate Change Issues in Biological Sciences : An Environmental Education Approach
“Climate change is real and is affecting all of us. The world is getting warmer and human activity is a major cause of this. The problem calls for an urgent response; but the situation is not entirely hopeless, at least, not yet. Youth has the highest stake since it concerns our future as well as...
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A Study on the Relationships of Instructional Skills to Job Satisfaction
This study aimed to find out the relationships of institutional skills to job satisfaction of College of Science Faculty Members (CSFM) of Polytechnic University for the School Year 2005-2006. The descriptive method of research was utilized. Results show that there was a high correlation and...
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ZERO WASTE MANAGEMENT: A Module for SCHOOLS
Its only when we truly know and understand that we have a limited time on earth and that we have no way of knowing when our time is up, we will then begin to leave each day to the fullest, as if it was the only one we had. - Elisabeth Kubler-Ross
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Classroom Practices on Values Formation and Environmental Education
So to hope to be able to have peace, to be able to have justice and environmental balance, are consequences of our behavior, not just our intentions. – Godfrey Reggio
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Why you look the way you do? Why you do the things you do?
Of all the living things, the human body in particular has been a source of curiosity by most of us. No doubt, the fields of biology, anatomy and physiology provide us a clear venue to explore and understand it.
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Nervous System: Master Controlling and Communicating System of the Body
Your sweetheart leaves a note on the refrigerator: " I Love you and see you later for a dinner at our favorite eatery, be ready.” a green crispy mango with hot chili sautéed shrimps on the table; a loud sound outside your house. All of these are examples of the works of the nervous system making...
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What are the ecological challenges we are all into and how sustainable development could solve them
We must not be forced to explore the universe in search of a new home because we have made the Earth inhospitable, even uninhabitable... ~ D. G. Kaufman and C. M. Fran, from Biosphere 2000
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Your Kidneys and How You Can Keep them Healthy
Excretion is the process of throwing waste and harmful substances from the body. The skin, lungs, kidneys and lower intestinal tract carry out this function. The kidneys eliminate most of the excess water and salt. Perspiration withdraws from the body about one-fourth (1/4) of all the heat...