Topics in Basic ScienceSources, Functions and Deficiencies of Mineral Salts (Macro-nutrients) Sources, Functions and Deficiencies of Mineral Salts (Micro-nutrients) Len Academy questions for Basic Science JSS1, second Term Len Academy mid-term test questions for Basic Science JSS1, 2nd Term Micro organisms causing food, water and air borne Diseases Vectors of diseases Bones of the Human Body Meaning of Drugs, Type of Drugs and their side effects Immunization, Processes involved in immunization and its importance Carbohydrates and Sugars
Academic Questions in Basic Science
The ultimate source of energy is _____.
The speed of wind is measured with a wind vane.
TRUE or FALSE
The nutrient majorly found in the liver is _____.
A body at rest possess _____ energy.
One of the various ways to eradicate diseases in our world today is to put in place an efficient and effective waste management system. In a country like Nigeria, Millions of tons of waste are produced yearly out of which less than 20% is recycled. This is why we see a lot of waste on some of the streets, on roadside, in landfills, gutters and ditches, with some of these wastes blocking drainage, constituting nuisance while others will end up becoming homes to various disease causing organisms. Some of these waste are biodegradable (that is, they can be broken down by the actions of living organisms) while others are non-biodegradable. These wastes are generated from homes, factories, market places, hospitals, schools, industries and many other places. Apart from the fact that it’s an eyesore, it will adversely affect national growth and development.
Below are some of the causes of increasing amounts of waste in various societies:
The larger the number of people in a society, the increase in the amount of waste produced. This will directly affect the turnout of waste materials from homes, market places and industries.
When funds allocated to waste management are siphoned, the society and its inhabitants will suffer. This is one of the reasons while we often see landfill waste in some society. Corruption is a disease that will eat up any society, either directly or indirectly. Sometimes, the trucks that are supposed to move these wastes from the environment fail to show up because they are yet to be paid for the previous job they had done. This will result into the accumulation of wastes within these environments.
In the streets of some neighborhood, different kinds of waste materials are seen littered along the road and gutters. Educating and creating awareness to the residents of these areas will go a long way in reducing waste materials in the affected neighborhoods.
When a nation advances in technology, there will be an increase in the production of non-biodegradable waste such as metal chips and plastics. These non-biodegradable wastes cannot be broken down and hence will always persist in landfills as solid waste.
Some people discard their household waste just anywhere they like because they are too lazy to go to waste dump site, perhaps because of distance.
Some people would rather litter the environment with various kind of waste because they intend to avoid the waste disposal fee at waste disposal and management sites.
The presence of a few recycling industries in a society will result in the accumulation of excess waste. If these wastes were properly recycled, new products will become cheaper since the cost of production will be reduced from these recycled wastes..
The burning of waste materials including plastics, papers and rubber will contaminate the atmosphere. Biodegradable waste which had been decomposed by bacteria and fungi will cause the evolution of toxic gases into the atmosphere. Also, waste may contain toxic chemical like dioxin (produced from the rearing of broilers). The pollution of the atmosphere caused as a result of these waste will negatively affect humans, plants, wildlife and other living organism.
The pollution of water bodies by solid and liquid waste may likely result in the suffocation and death of aquatic organism. For instance, oil spillage has been a major problem for the oil producing states in the south of Nigeria.
The decomposition of certain biodegradable waste will result into the release of green house gases into the atmosphere. This will affect the weather condition over a long period of time because the temperature at the surface of the earth is constantly on the rise.
Certain waste materials such as the containers of plastic water, inks, oil and petroleum products will have damaging effects on the soil. The growth of plants and other organisms living in and on the soil will be negatively impacted.
With regards to the carbon cycle, the only organism that takes away carbon(IV)oxide from the atmosphere are plants. Plants are also the organisms responsible for putting back oxygen into the atmosphere through the process of photosynthesis.
Carcinogens are substances that can cause cancer. Radioactive wastes can be potentially damaging to humans when inhaled. They increase the formation of cancerous cells in the human system. Some may cause leukemia, a form of blood cancer.
When excess waste materials find their way into gutters and pipes, blockage of such gutters and pipes will result. This will result to flooding in the affected areas. Stagnant waters will act as breeding sites for mosquitoes.
Wastes materials found in the neighborhood serves as homes to pest and pathogens. These pathogens will in turn cause diseases in the long run. For instance, Lasa Fever is a disease caused by rodents dwelling in a dirty environment. Other diseases caused as a result of improper waste management includes cholera, malaria, fever, dysentery, diarrhea and tetanus.
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Amazing facts in Basic Science
The liquid inside a coconut 🥥 can be used as an excellent substitute for your blood plasma
Elephants can't jump
NOTABLE POINTS IN Basic Science
All fruits have seeds. There is nothing like a naturally occurring seedless fruit. Even banana, coconut and pineapple have all got seeds.
Weight can be defined as the force of gravity acting on an object. If you traveled to space, you would be weightless because there isn't any force of gravity acting there. We all have weight on earth becasue the force of gravity acts here. Weight is measured in Newton