Fertilizers are chemical compounds rich in specific nutrients, produced in factories. Examples include urea, ammonium sulfate, superphosphate, potash, and NPK (Nitrogen, Phosphorus, Potassium). NCERT Class 8 Science Chapter 1 Crop Production and Management
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Excessive fertilizer use reduces soil fertility, leads to water pollution, and harms the environment. To maintain soil fertility, farmers are encouraged to substitute fertilizers with organic manure or practice fallow periods. NCERT Class 8 Science Chapter 1 Crop Production and Management
Continuous cultivation depletes soil nutrients, necessitating the addition of manure to replenish them and support healthy plant growth. NCERT Class 8 Science Chapter 1 Crop Production and Management
For the mechanism to work, each germ cell must have only one gene set to ensure that, during sexual reproduction, each parent contributes one set of genes to the progeny. This segregation and combination of gene sets from both parents ...
Both parents must contribute a copy of the same gene. This implies that each pea plant possesses two sets of all genes, with one set inherited from each parent.