Biogas is chiefly composed of methane (CH4), is produced from the decomposition of organic matter by bacteria in the absence of oxygen, a process called anaerobic decomposition. Bacteria that can survive without oxygen is called anaerobic bacteria.When you complete the activity you will produce your own biofuel and have studied it.
Best Biology Projects # 6. Do plants grow towards the light
This project investigates a property of plants known as phototropism: that is, their ability to grow toward light sources wherever they may be. You may be surprised at how clever these plants can be, even without a brain.
Best Biology Projects # 5. Osmosis: experiment with potato
Osmosis is the process by which solutions of different concentrations move across semi-permeable membranes from the region of lower concentration into that of higher concentration. Osmotic pressure is the force with which molecules move from the area of its higher concentration into that of its lower concentration.
Best Biology Projects # 4. Lung model science project
Build Your Own Lung Model Science Project
In this lung model science project, the straws represent your trachea and bronchial tubes, the balloons represent your lungs, the bottle is your chest, and the plastic sheet is your diaphragm – a sheet of muscles under your chest. When you breathe in, or inhale, your diaphragm contracts and moves down, creating more space in your chest for your lungs to fill with air. When you exhale (breath out), your diaphragm relaxes back up. The space inside your chest gets smaller forcing the air out of your lungs.
Best Biology Projects # 3. How to make pulse counter
The rhythmical dilation of arteries produced when blood is pumped outward by regular contractions of the heart, especially as palpated at the wrist or in the neck. The pulse is usually felt just inside the wrist below the thumb by placing two or three fingers lightly upon the radial artery.