Why does high pressure bring clear weather? The absence of wind in high pressure is due to the lack of an air-pressure gradient. Because rising air cools and results in the condensation of water vapor, which is the reason for clouds and precipitation, downward-moving air and high pressure usually brings mostly clear skies. What is […]
Is oil a renewable fuel?
Is oil a renewable fuel? Renewable fuels are fuels produced from renewable resources. Examples include: biofuels (e.g. Vegetable oil used as fuel, ethanol, methanol from clean energy and carbon dioxide or biomass, and biodiesel) and Hydrogen fuel (when produced with renewable processes). What are the worst fossil fuels? Why is coal the worst fossil fuel […]
What is the weight of a 0.2 kg mass?
What arguments did Thomas Paine use in common sense to persuade the colonists to declare independence?
What arguments did Thomas Paine use in common sense to persuade the colonists to declare independence? Published in January 1776 in Philadelphia, nearly 120,000 copies were in circulation by April. Paine’s brilliant arguments were straightforward. He argued for two main points: (1) independence from England and (2) the creation of a democratic republic. What was […]
What happens to potatoes when boiled?
What happens to potatoes when boiled? In contrast to oven baking, when potatoes are boiled the starch granules absorb not only the internal moisture but also some of the surrounding water. This causes the starch granules to rupture and spill their moist starchy contents, resulting in mashed potatoes that are wet and pasty. Should you […]
Which two substances Cannot be broken down?
Which two substances Cannot be broken down? Each kind of atom is an element. Elements are pure substances that cannot be broken down into simpler substances by ordinary chemical means. Can antimony be broken down by chemical means? The substance that can not be broken down by chemical means is antimony. What Cannot be broken […]
What is the weakest carbon carbon bond?
What is the weakest carbon carbon bond? Alkyne What are the 4 main carbon stores? Carbon is stored on our planet in the following major sinks (1) as organic molecules in living and dead organisms found in the biosphere; (2) as the gas carbon dioxide in the atmosphere; (3) as organic matter in soils; (4) […]
Which type of igneous rocks based on composition has the highest amount of silica content?
Which type of igneous rocks based on composition has the highest amount of silica content? Compilations of many rock analyses show that rhyolite and granite are felsic, with an average silica content of about 72 percent; syenite, diorite, and monzonite are intermediate, with an average silica content of 59 percent; gabbro and basalt are mafic, […]
What is the effect of grazing in our environment?
What is the effect of grazing in our environment? Grazing can damage habitats, destroy native plants and cause soil erosion. When livestock eat native plants, invasive plants often replace them. This reduces food supply in ecosystems because the animals start competing for non-invasive plants for food. Is a grazing animal? In agriculture, grazing is a […]
What are 4 methods of determining population size?
What are 4 methods of determining population size? Four methods of determining population size are direct and indirect observations, sampling, and mark-and-recapture studies. What are the two primary parameters used to describe a population? Within a particular habitat, a population can be characterized by its population size (N), the total number of individuals, and its […]