-A species of organism that can indicate an area of pollution by its presences or absence in that specific area. Lichen – How does it indicate air pollution? Lichen is a moss like plant that grows on exposed areas such as on rocks and on trees. Lichen relies on nutrients that it absorbs from rainwater…
On a clear sunny day, the sky above us looks bright blue. Why is the sky blue? To answer these questions, we must learn about light, and the Earth’s atmosphere. THE ATMOSPHERE The atmosphere is the mixture of gas molecules and other materials surrounding the earth. It is made mostly of the gases nitrogen (78%),…
The pattern that one must consume fuels and dirtily provide energy and power has failed. Applying it has caused and it cannot solve the increasing world energy crisis. Most energy is presently obtained by “dirty methods”. Hence as energy production increases so do harmful combustion of by-products. And if this method continues to be used,…
Hypothesis If the change in temperature is greater when the water is heated with the use of the fire caught by the food substance, then the energy content in the food substance is higher because the heat energy is greater, since the heat energy is absorbed by the water when the fire is kept under…
Political Subsidies and mandatory blending have created an artificially rapid growth in biofuel production, worsening some negative impacts. Existing policies have had a limited effect in achieving energy security and climate change mitigation and therefore need to be reviewed. Government incentives and support for biofuels have been largely guided by national or regional interests rather than a more global perspective. There is…
Biofuel is a form of recycled fuel, produced from biomass or waste generated by the use of organic material which may be any substance including vegetable and animal products like grass, trees, plant parts and plants in the ocean. Biomass can produce liquid and gaseous fuels, which can do almost everything that fossil fuels do.…
Aim: Investigate any one of the factors affecting the rate of heat loss in a liquid. Introduction: Heat is a form of energy that flows due to a temperature difference. Heat transfer is a process in which energy in the form of heat energy is exchanged between the materials which are at a different temperature.…
Purpose: Find crystallization temperatures for 7 concentrations of KNO3 and make a solubility graph Materials: KNO3, test tube, stir rod, weigh boats, hot plates, thermometer, 10 mL graduated cylinder. Procedure: -In two test tubes, put exactly 5 mL water in each -Put assigned amount KNO3 in each -Heat in hot water bath until dissolved- you…
Purpose: Find silver produced and compare to predicted. Cu + 2AgNo3 → Cu(NO3)2 + 2Ag Procedure: -in small beaker (100-250 mL), weigh beaker -Add 3.00 OR LESS of AgNo3, weigh AgNo3 -Weigh copper penny -Add 80 mL H2O -Heat and dissolve (warm, not boil) -Put copper penny into AgNo3(aq) –observe -Allow to sit overnight…
Description Barn owls live in many parts of the world. Their upper body is covered in grey feathers, dark, ribbon lines and pale spots. An owl’s lower body consists of white with several black marks, just like a Dalmatian! Their faces are heart-shaped and white with brown edges. The eyes of a barn owl are…
A horse travels at four gaits: the walk, trot, canter, and gallop. The average horse’s walk speed is 6.4 km/h. At the walk, the horse moves in a four-beat succession in the order shown, right. There is always one foot raised and three on the ground. The walk is the slowest of the horse’s gaits…
Electric Charge Charges that are the same repel each other. Charges that are different attract each other. This rule is the same rule for interactions between magnetic poles. Protons repel protons and attract electrons because they have different types of electric charges. Protons have a +ve charge and electrons have a -ve charge. This interaction…
The Cobra’s venom consists mainly of neutroxins, however it also contains a variety of cardiotoxic and other compounds. They have enough venom to kill a large adult elephant; however, they are not evolutionally predestined to bite humans, because they know that humans are not a food source for them. They will only attack when threatened.…
Aim of Study The aim of this study is to measure downstream changes in the hydraulic geometry and assess its influence on the changes in fluvial hydraulics in the lower reaches of the Morant River in St. Thomas, and further to show these influence depositional landforms. Null Hypothesis The changes in Hydraulic Geometry do not…
What is the scientific method? It is a logical, systematic approach to solve a problem. What is always the first step of the scientific method? Identify the problem and make observation. What makes a good hypothesis? A good hypothesis is one that you can test. What is a control? Comparison with one or more experimental…
Three examples of fossil fuels could be a. Coal b. Oil c, Natural Gas The fossil fuel that is most abundant and least expensive is Coal The plant material that dies in swampy areas and does not decay eventually forms a dense material called what? Peat What conditions are necessary in swamps or bogs to…
Numerology Numerology is any study of the purported divine, mystical or other special relationship between a number and some coinciding observed (or perceived) events. Numbers have always been important, but viewing the history of many ages many civilization have given some numbers importance on others on the basis of their significance on that particular civilization.…
Nutrition is the science behind how your body uses the components of food to grow, maintain and repair itself. Your body needs more than 50 nutrients on a daily basis in order to function properly. The fifty nutrients belong to one of six general categories. *Carbohydrates *Proteins *Vitamins *Fats *Minerals *Water With the exception of…
Why do we need sleep? sleep takes up almost 1/3 of our lives when deprived of it, we feel terrible and our performance suffers researchers, however, are not sure exactly why we need sleep – just that we do What are the effects of lack of sleep? Major effects fatigue diminished immunity to disease slight…
Defining Characteristics of the Plant Kingdom: Multicellular Terrestrial Embryophytes Photosynthetic (almost all) Eukaryotic 4 Major Groups 1. Non-Vascular Plants (Bryophytes and Friends) No vascular tissue – therefore must rely on surrounding moisture and osmosis to move fluids through their bodies. Small in stature, and simplistic – NO organs (roots, leaves, stems) (Rhizoids = root-like structures…