Tutor profile: Dharma D.
Subject: Natural Sciences
How do mushrooms get their food?
Mushrooms get their food from the other dead plants or dead animals or decaying organic matter. This is because mushrooms are the fungi group that grow (or depend on food for) on other resources such as decaying organic matter. Mushrooms are not green and do not contain chlorophylls and hence can not do photosynthesis as other green plants do. So, a mushroom grows on the dead animals or decaying organic matter or decaying plants and after the metabolization of such decaying matter, mushrooms get food for themselves. Some of the wild mushrooms are parasitic (i.e. they kill their host organic matter) as well as poisonous in nature. The mushrooms produced in agricultural farms are not poisonous and they grow on steamed rice straw (or paddy straw).
Q) According to Moh’s hardness scale, which of these groups of minerals can scratch fluorite: a) Talc, Gypsum, and Calcite b) Calcite, Quartz, and Topaz c) Apatite, Orthoclase and Corundum d) Diamond, Gypsum, and Quartz
The best option here is: c) Apatite, Orthoclase, Corundum This is because the hardness scale of Apatite, Orthoclase, and Corundum are high in comparison to fluorite and hence fluorite can be scratched by these mineral combinations. Other options are wrong as Talc, Gypsum, and Calcite have a lower value of hardness scale and hence can not scratch Fluorite.
Subject: Earth Science
Explain about climate change,
Climate change is a real-time phenomenon which is occurring since human civilization has developed more industries and vehicles that uses fossil fuels. After the industrial era, the carbon emission on the Earth's environment is increasing rapidly and has crossed the 400 ppm concentration of CO2. Thus, the greenhouse effect is forcing to increase the global average temperature, and hence the climate change is happening all around the globe. Some of the prominent examples of climate change are the melting of Arctic/Greenland ice sheets and glaciers at an alarming rate, the sea level rise, increased frequency and intensity of hurricanes/typhoons on the world, increased quantity of wildfires, drought in some region and increased flooding situation in some other regions, etc. The coral bleaching, increase in sea surface temperature (SST), and loss of different marine animals/plant species. The global ecosystem and biodiversity are at risk due to global climate change. Many of the small island nations are on the verge of submergence such as the Maldives, Bangladesh coast, Italy, Philippines, etc. Also, due to climate change, many new diseases and viruses are affecting the world like a pandemic and we all are seriously getting affected by these direct or indirect consequences of climate change. Food security, loss of land, wildfires, and desertification are the upcoming challenges for the world. Thus, climate change is affecting every nation and person and hence we need to combat climate change by our combined efforts. The fight against climate change can be done by reducing carbon emission by the use of solar power, hydroelectricity and by reducing fossil fuel emission. Similarly, we need to reforest the barren land and restore the biodiversity in many abandoned and wildfire-affected regions so that we can improve the life of plants/animals in harsh conditions as well. The combined efforts from all people by reducing or replacing the plastics from our society and planting trees, conserving endangered species, restoring swamps and corals will help marine as well as land areas to become more habitable and sustainable. The development activities should be more environment-friendly and sustainable so that we as well as our mother earth can grow equally!
needs and Dharma will reply soon.