What are the uses of the Second Law of Thermodynamics? The first law of thermodynamics states that energy is conserved even when its form is changed, as for instance from mechanical energy to heat. By contrast, the second law of thermodynamics allows us to know how well an energy system performs in terms of the […]
How many animals are impacted by pollution?
How many animals are impacted by pollution? Over 1 million seabirds and 100,000 sea mammals are killed by pollution every year. People who live in places with high levels of air pollutants have a 20% higher risk of death from lung cancer than people who live in less-polluted areas. How many animals die a year […]
Which pathway is known as Calvin cycle?
Which pathway is known as Calvin cycle? In the C3 pathway, atmospheric CO2 enters the leaf via the stomata, diffuses as a gas to the chloroplast and is assimilated there directly through carboxylation using ribulose-1,5-bisphosphate (RuBP) as the acceptor by RuBisCO, in the photosynthetic C-reduction cycle also known as the Calvin cycle (Figures 1(a) and […]
How do farmers keep their soil healthy?
How do farmers keep their soil healthy? Cover Crops Cover crops are plants grown to protect and enrich soil and make sure soil is healthy by putting nutrients back into it. They help slow erosion, control pests and diseases, and increases organic matter. The use of cover crops has also been shown to increase crop […]
How do frogs get inside your house?
Why do particles vibrate faster when heated?
Why do particles vibrate faster when heated? When heat is added to a substance, the molecules and atoms vibrate faster. As atoms vibrate faster, the space between atoms increases. The motion and spacing of the particles determines the state of matter of the substance. The end result of increased molecular motion is that the object […]
What is kinetic lifting?
What is kinetic lifting? Kinetic lifting means “manual handling”. This is the practice of lifting heavier weights on your own without the help of a machine or a tool. It is a method of handling weight properly without causing injury by using your whole body. Such methods are lifting, pulling, pushing, manoeuvring, steadying, carrying. Can […]
What can you add to a paper airplane to make it fly farther?
What are the 5 stages of epidemiological transition?
What are the 5 stages of epidemiological transition? The epidemiologic transition describes changing patterns of population age distributions, mortality, fertility, life expectancy, and causes of death. What are the five demographic processes? Demography can be defined as the study of population, typically focused on five aspects: (1) size, (2) geographic distribution, (3) composition, (4) the […]
How can we plot magnetic field of a bar magnet?
How can we plot magnetic field of a bar magnet? Magnetic fields can be mapped out using small plotting compasses : place the plotting compass near the magnet on a piece of paper. mark the direction the compass needle points. move the plotting compass to many different positions in the magnetic field, marking the needle […]