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Answer:
Biodegradable material:-Materials that are biodegradable include corrugated cardboard and even some plastics. Most plastics, however, are not biodegradable – meaning they cannot break down easily after disposal and can remain on the planet as waste for decades.
communicable disease:-Communicable disease” means an illness caused by an infectious agent or its toxins that occurs through the direct or indirect transmission of the infectious agent or its products from an infected individual or via an animal, vector or the inanimate environment to a susceptible animal or human host.
Manures are considered better than fertilizers in maintaining soil fertility because: i) They add nutrients to the soil without affecting its fertility. ... iii) Manures improve the structure of soil by increasing its water holding capacity, porosity, and texture. They also promote the growth of crops.
Explanation:
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Answer:
( 1st)Biodegradeable" meaning which can be decomposed biologically with the help of certain micro-organisms. Biodegradeable material generally includes wood, wool, cotton, animal waste or any other organic material which can be broken down into carbondioxide, methane or any other simple organic molecules with the help of micro-organisms. They are often referred to as 'Bio-waste'. Examples of Biodegradable material are:
( 2d)Some examples of the communicable disease include HIV, hepatitis A, B and C, measles, salmonella, measles, and blood-borne illnesses. Most common forms of spread include fecal-oral, food, sexual intercourse, insect bites, contact with contaminated fomites, droplets, or skin contact.
(3d)Organic manure or organic fertilizer is made up of organic biodegradable waste like animal excreta and agriculture wastes. As it biodegradable it cannot harm the environment and increase the soil fertility it is better than chemical fertilizer. But chemical fertilizers are nutrient specific and prepared in chemical factories. Thus, the correct answer is option C.
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