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Yogita Ingle 5 years, 5 months ago
Biomagnification, which is the increase in concentration of toxins up the food chain, especially affects you. Chemicals and toxins accumulate more and more as you move up the food chain, because they donot get broken down in the body.
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Disease: It is a condition in which one or more organs or systems of the body are adversely affected. Disease is characterized by various signs and symptoms.
Infectious Disease: A disease which can be easily transmitted from one person to another is called infectious disease.
Non-infectious Disease: A disease which cannot be transmitted from one person to another is called non-infectious disease.
Posted by Rehab Hashmi 5 years, 5 months ago
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- Spore formation is a method of asexual reproduction.
- Plants like ferns, moss, fungi reproduce by this method.
- Spores are unicellular reproductive bodies present in sac called sporangia.
- When spores mature sporangia burst and spores are carried to different location by air, wind, water.
- When spores fall on a suitable ground, they germinate and develop new individuals.
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Meghna Thapar 5 years, 4 months ago
Distillation is the simple process of heating a liquid to form vapours and then cooling the vapours to get back the liquid. It is done to produce certain alcoholic drinks to increase their alcoholic content. The type of alcohol in the alcoholic drinks we drink is a chemical called ethanol.To make alcohol, you need to put grains, fruits or vegetables through a process called fermentation (when yeast or bacteria react with the sugars in food - the by-products are ethanol and carbon dioxide).
Posted by Riya Ghosh 5 years, 5 months ago
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Yogita Ingle 5 years, 5 months ago
A greenhouse stays warm inside, even during the winter. In the daytime, sunlight shines into the greenhouse and warms the plants and air inside. At nighttime, it's colder outside, but the greenhouse stays pretty warm inside. That's because the glass walls of the greenhouse trap the Sun's heat.
Posted by Riya Ghosh 5 years, 5 months ago
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Meghna Thapar 5 years, 5 months ago
The industrial wastes includes organic matter, inorganics (sodium, potassium, calcium, magnesium, copper, lead, nickel, and zinc), pathogens, and nutrients (most notably nitrogen and phosphorus). The treated wastewater can then be safely discharged into water bodies, applied to land, or even reused in plant operations.
Posted by Punam Gajghatem 5 years, 5 months ago
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Meghna Thapar 5 years, 5 months ago
One important factor is body size with larger animals, on average, living longer than smaller ones. In some species, environmental factors like temperature also influence how long animals live, with a lower body temperature generally being associated with a longer lifespan.
Posted by Riya Ghosh 5 years, 5 months ago
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Meghna Thapar 5 years, 5 months ago
To assist in the removal of these colloidal particles from suspension (dispersion), chemical coagulation and flocculation are required. Chemicals are mixed with the wastewater streams to promote the aggregation of the suspended solids into particles of sufficient size to settle or be removed.
Posted by Priya Yadav 5 years, 5 months ago
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Meghna Thapar 5 years, 5 months ago
Synergids are one of two small cells lying near the egg in the mature embryo sac of a flowering plant. They help in fertilisation. The two Synergid cells function as the producing center of the signals which guide the pollen tube. The three antipodal cells are the nutritional center.
Posted by Sibananda Tripathy 5 years, 5 months ago
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Meghna Thapar 5 years, 5 months ago
The ecosystem services are grouped into four broad categories: provisioning, such as the production of food and water; regulating, such as the control of climate and disease; supporting, such as nutrient cycles and oxygen production; and cultural, such as spiritual and recreational benefits.
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Nutrients are the compounds in food that provide us with energy that facilitates repair and growth and helps to carry out different life processes.
These nutrients are divided into two categories:
- Macronutrients, which are required by the body in large amounts.
- Micronutrients, which are required by the body in small amounts.
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Posted by Prakash Chandra 5 years, 5 months ago
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Meghna Thapar 5 years, 5 months ago
Plants and animals go through three basic stages in their life cycles, starting as a fertilized egg or seed, developing into an immature juvenile, and then finally transforming into an adult. During the adult stage, an organism will reproduce, giving rise to the next generation.
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Yogita Ingle 5 years, 5 months ago
Tapetal cells are very large cells with more than one nucleus. They assist with pollen grain growth and development. Tapetal cells undergo endomitosis where the nucleus in the nuclear membrane splits, but cytokinesis does not happen. They become bi / multi nucleate because of this. Usually the cells are larger and have more than one nucleus per cell. The nuclei of tapetal cells also split as the sporogenous cells undergo mitosis. Sometimes, this mitosis is not normal due to which many cells of mature tapetum become multinucleate. It is also possible to see polyploidy and polyteny at times.
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Meghna Thapar 5 years, 4 months ago
Logistic growth is when growth rate decreases as the population reaches carrying capacity. Carrying capacity can be defined as maximum number of individuals in a population that can be supported by the environment. When a population's number reaches the carrying capacity, population growth slows down or stops altogether. While the logistic growth model is often more descriptive of what occurs in reality than the exponential growth model, it still doesn't accurately describe what usually occurs in real life.
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