Many of the animals facing extinction are very important. Most of the extinctions are caused by human hunt and pollution. These are not obligatory and must be stopped, because the life in the wilderness is one to be admired, not one to be destroyed. The sinners have to stop.
Most of the metal we throw away at home comes from food and drink cans and aerosols. Typically food cans are made from steel, which can be melted down and turned into new food cans. Drinks cans are generally thinner and lighter and made from aluminum, which can also be recycled very easily. Mining aluminum is a very energy-intensive and environmentally harmful process. That's why waste aluminum cans have a relatively high value and why recycling them is such a good thing to do.
One problem with recycling paper is that not all paper is the <em>same</em>. White office printer paper is made of much higher quality raw material than the paper towels you'll find in a factory washroom. The higher the quality of paper waste, the better the quality of recycled products it can be used to make. So high-grade white paper collected from offices can be used to make more high-grade white recycled paper. But a mixture of old newspapers, office paper, junk mail, and cardboard can generally be used only to make lower-grade paper products such as "newsprint" (the low-grade paper on which newspapers are printed). Corrugated cardboard (which is held together with glue) is harder to recycle than the thin cardboard used to package groceries.
In conclusion, metals are almost all the same. There are a variety of different papers, (paper towel, cardboard, etc) so it is very hard to recycle that if they are all different.
Hope this helped!
In terms of parasites vs hosts, it is an organism in which the parasite resides and normally feeds + reproduces.
Answer:
Basically, the ecosystem consists of all plants and animals, that interact with each other, and are living in a particular territory. Plants and animals represent the biotic (living) component of the ecosystem, while the soil, minerals, gasses, climate etc. represent abiotic (non- living) part.
Carbon is an essential element for all living beings and it is the main component of both organic and inorganic components.
Now, the question is how does that carbon enter the biotic part of ecosystem from the atmosphere (abiotic part).
In the atmosphere, carbon is mostly found in the form of carbon dioxide (CO₂). Plants are able to use it in this form, and with water and sunlight, through the process of photosynthesis, incorporate it in the organic components, such as sugar and complex carbohydrates. Animals that feed on plants can now ingest these compounds, making it part of their own organisms.
In this way, photosynthesis is the main process by which carbon from the atmosphere enter the biotic part of the ecosystem.
