Answer:
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Step-by-step explanation:
I- Control of grasshopper sand locusts has traditionally relied on synthetic insecticides, and for emergency situations this is unlikely to change. However, a grow-ing awareness of the environmental issues associated with acridid control as well as the high costs of emergency control are expanding the demand for biological control. In particular, preventive, integrated control strategies with early interventions will reduce the financial and environmental costs associated with large-scale plague treatments.The recent development of effective oil formulations of Metarhizium anisopliae sporesin Africa, Australia, and Brazil opens new possibilities for environmentally safe con-trol operations. Metarhizium biopesticide kills 70%–90% of treated locusts within14–20 days, with no measurable impact on nontarget organisms. An integrated pest management strategy, with an emphasis on the use of Metarhizium, that incorporate srational use of chemical pesticides with biological options such as the micro sporid-ian Nosema locustae and the hymenopteran egg parasitoids Scelio spp., has become arealistic option.
ii- a) It creates a sealed compartment within the cell that is filled with water, dissolved inorganic and organic molecules (enzymes). It stores food and a range of nutrients that the cell requires to thrive, as well as waste products that protect the cell from contamination
b)The primary function of the nucleolus is in facilitating ribosome biogenesis, through the processing and assembly of rRNA into prerbosomal particles. OR is where ribosomes are made.