primary food crops produced are: corn‚ rice‚ barely‚ wheat‚ vegetables‚ fruits and nuts. The major industrial crops are: cotton‚ tobacco‚ madder‚ castor beans and sugar beets. Sheep products such as wool and Karakul skins are exported. It is also a country rich in natural resources‚ mineral and precious stone deposits‚ natural gas and untapped petroleum stores. Many of these resources remain relatively unexploited. The United States‚ France‚ India and Pakistan are Afghanistan’s primary
Free Export International trade Import
mostly caused by human emissions of sulphur and nitrogen compounds which react in the atmosphere to produce acids. Acid rain can slow the growth of vulnerable forests and cause leaves and needles to turn brown and fall off. In addition‚ it depletes minerals from the soil and then it stunts the growth of the plant. Some of the most dramatic effects on forests have been observed in Europe. In 1983‚ a survey in West Germany showed that 34 % of the country’s total forest is damaged by air pollution. This
Premium Sulfur dioxide Water Acid rain
other plants. When plants are competing they compete for natural abiotic and biotic resources. However not all Allelopathy is negative. Some plants release acids and minerals that are beneficial to other plants. For example some plants release phosphate-solubilising acids that provide phosphate to other plants lacking this mineral. Also an allelopathic crop can be used to control weeds by planting a variety with allelopathic qualities‚ either as a overpowering crop‚ in a rotation‚ or when left as
Premium Plant Seed Fruit
WYOMING History and Important People For many years the Wyoming region was divided into two parts. The section west of the Continental Divide was part of three territories first Oregon‚ then Utah and Idaho. Eastern Wyoming was included in Nebraska and Dakota. Finally‚ in 1868‚ these sections were united into Wyoming Territory. The following year legislature granted that woman had the right vote and the right to hold office the first such legal recognition in the United States. In 1924 Wyoming elected
Premium Wyoming Colorado Oregon Trail
1) What is the purpose of ice or cold water? To cool down the gas so that it condenses and turns into a liquid. 2) when the gas collecting tube is upside down‚ give a property of this gas. It is less dense than air. 3) Why is a pencil used in drawing the origin line in chromatography? If pen was used‚ it will dissolve giving colours and so‚ the experiment won’t be accurate. Pencil doesn’t interfere with the results. 4) When using ethanol‚ give a better apparatus arrangement‚ and why? Cover
Premium Sulfuric acid Hydrochloric acid Acid
slowly moving towards the bottom of the beaker and settling there. The liquid in the solution remained the blue colour from before. Cementation: The steel wool turned into a brown colour where it had been in contact with the sulphuric acid with copper dissolved into it. The copper attached onto the steel wool and it was replaced by the steel wool. The liquid was not blue anymore and it was a clear colour. Electrowinning: Bubbles formed around the electrodes as soon as they entered the solution. Bubbles
Premium Zinc Aluminium Iron
growing plants using mineral nutrient solutions‚ in water‚ without soil. Terrestrial plants may be grown with their roots in the mineral nutrient solution only or in an inert medium‚ such as perlite‚ gravel‚ mineral wool‚ or coconut husk. Researchers discovered in the 19th century that plants absorb essential mineral nutrients as inorganic ions in water. In natural conditions‚ soil acts as a mineral nutrient reservoir but the soil itself is not essential to plant growth. When the mineral nutrients in the
Premium Hydroponics Soil
farmers’ markets. A friend of the Conrad’s introduced them to the world of farmer’s markets when they mentioned wanting to expand and try something new. Liz and Jeff now participate in farmer’s markets year round. They sell meat‚ washable skins‚ and wool at the farmer’s markets. Their tables display hand spun yarn‚ knit hats‚ gloves‚ socks‚ blankets‚ etc. The meat is sold in a variety of cuts per pound. The prices are devised based off of labor and raising costs‚ time‚ and competition. Riverslea
Premium Agriculture Meat Livestock
The results obtained are recorded in table. B. The effect of temperature on the number of brine shrimps eggs hatched 1. 10g of sodium chloride is weighed by electronic weighing balance and placed into 1000ml of beaker. 2. 1000cm3 of mineral water is added into the beaker. 3. Steps 1 and 2 are repeated for 2 times. 4. Brine shrimp eggs are added into the three different beakers. 8. The beakers are placed at three different surrounding temperatures in which one is placed in
Premium Seed Germination Water
Natural dyes Natural dyes are dyes or colorants derived from plants‚ invertebrates‚ or minerals. The majority of natural dyes are vegetable dyes from plant sources – roots‚ berries‚bark‚ leaves‚ and wood — and other organic sources such as fungi and lichens. Archaeologists have found evidence of textile dyeing dating back to the Neolithicperiod. In China‚ dyeing with plants‚ barks and insects has been traced back more than 5‚000 years.[1] The essential process of dyeing changed little over time
Premium Dye Textile