WORKING DISTANCE is space between the bottom of objective the lens and the surface of the slide.
The distance between front edge of the objective and the lens and the specimen surface ("with the surface of the cover glass in case of the cover glass objective lens") when the specimen is also focused.
The working distance (W.D.) which is determined by the linear measurement of the objective and front lens to the focal plane. In the general, the objective of the working distance decreases by the magnification and the numerical aperture of both increase. The working distance is the distance and from the front of the lens to be the focal plane
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The survival of the 2 percent of the population is due to the presence of a gene obtained from other species. This gene must be responsible for developing resistance in the insects, against the insecticide that was used by the farmer. The gene got incorporated in only 2% of the insects and therefore, they survived and rest of them were susceptible to the insecticide and thus, died.
I think it’s
A) Calcium Sulfide
Answer:
someone who moved from a different country looking for job opportunities
Explanation:
Fossil Fuels Affect the Environment in the Following Ways:
1. When we burn coal, oil, and natural gas for fuel, too much carbon enters the atmosphere at one time. The carbon combines with oxygen to form carbon dioxide (CO2), a greenhouse gas. Greenhouse gases are contributing to global warming because they trap more of the Sun's energy in the Earth's atmosphere.
2. Due to the burning of Fossil Fuels, Some Poisonous Gases like Sulphur Dioxide, Nitrous Oxide, Methane and Carbon Dioxide, Which lead to Widespread Pollution in The Atmosphere.
3. This maybe a bit Difficult. Burning of Fossil Fuels causes Acid Rain. Acid rain is a rain or any other form of precipitation that is unusually acidic, meaning that it has elevated levels of hydrogen ions (low pH). It can have harmful effects on plants, aquatic animals and infrastructure. Acid rain is caused by emissions of sulfur dioxide and nitrogen oxide, which react with the water molecules in the atmosphere to produce acids.
4. It also releases Radioactive Substances or Radiances which Can be Pretty Explosive.
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