Answer: d. all the above
Natural resources can be classified into two main types:
1.Renewable resources
2.Non-renewable resources
Renewable resources are those which can be replenished and reused. These resources are abundantly present in the nature. Example wind, biomass. Non-renewable resources are those which cannot be replenished after single time use. Example fossil fuels, groundwater, natural gases, forests. These resources needs to be conserved and their use should be judicious. Government should participate to prevent excess and destructive use of natural resources. Such as it should prevent deforestation. Many buisnesses requires the use of fossil fuels and natural gases which should be limited as these resources takes several years to be produced under the heap of earth. Citizens should prevent the use of groundwater in excess as this is the water reservoir which takes many years to be filled by natural means such as rain, agricultural irrigation, river and lakes.
Helium is a real gas also. The only difference I know is that it is inert and does not interact... Same goes with all the Group 8 Noble gases.
Answer:
A biochip or DNA chip or DNA microarray is a slide that contains the different fragments of DNA . The DNA microarray technique is used to study the expression level of various genes simultaneously. For this the researcher:
A. Attach the fragments of DNA about 500 to 5,000 bp that are produced by the controlled growth of the nucleotides by providing the narrow beam of light and synthesised by the PCR technique on to the slide in the form of dots or spots.
B. In dots, the reporter oligos or probes are attached which are used to hybridize the cDNA to the microarray. The cDNA is labeled with the fluorescent molecules called fluorophore.
C. After hybridization, the probe-target hybridization is detected by placing the washed array in the confocal fluorescence microscope which observes the pixel and helps calculate the fluorescence intensity.
Answer:
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Answer: option D
Reclamation of sanitary landfills occurs before the land fills is capped.
Explanation:
Reclamation of sanitary landfills is a method use to expand the municipal solid wastes sanitary landfill capacity so as to avoid high cost of purchasing another land.
Sanitary landfills is an area of land where wastes is allow to decompose or degraded chemically, physically and biologically until it is safe.
This reclamation is done before the landfills is capped so as to avoid high cost of getting another land.