Tag: biology

Rags are non-biodegradable or difficult-to-recycle materials that are commonly disposed of in landfills. Kitchen waste and agricultural waste are better suited for composting.

In many waste management programs, blue bins are specifically designated for recyclable materials like paper, plastic, and metal. This helps separate recyclables from organic waste.

Redworms (vermicomposting) consume organic matter like vegetable peels, plant waste, and animal waste. Rags, which are often synthetic or treated fibers, cannot be processed by redworms.

Landfill is a highly engineered facility to ensure the safe removal of waste from the society. The modern landfills not only can serve as reclaimed land which can be converted into parks and playgrounds, they also serve in other purposes like methane production (landfill gas) etc. 

Landfilling is widely practiced as a low cost method for garbage disposal, especially for large volumes of municipal solid waste, although recycling and vermicomposting are more sustainable.

Burning plastics releases toxic chemicals and pollutants into the atmosphere, making it an environmentally hazardous practice. Landfilling, vermicomposting, and chemical treatment are managed disposal methods.

Leachate is the liquid that drains or 'leaches' from a landfill. It is formed when water passes through the waste, picking up pollutants, and is a major environmental concern.

Once a landfill is closed and properly sealed, the land can be reclaimed for public use, such as parks, sports fields, or other recreational areas, provided it is safe.

The placenta is an endocrine gland, that is only present during pregnancy. It produces hormones including human chorionic gonadotropin (hCG), progesterone, estrogen, and human placental lactogen (hPL).

Prolactin is a hormone secreted in mammals (lactotrophs), usually females and stimulates the mammary gland to produce milk. This hormone is also called luteotropin or luteotropic hormone. The major source of prolactin is the anterior pituitary regulated by the hypothalamus, however, several other tissues synthesize and secrete this hormone. All the other hormones in the options such as hCG, hPL, and estrogen are secreted by the placenta.