They have to wait for the right weather to dig a grave. If it looks asthough it is about to rain then they will know that all of the soil will fall inside the grave.
um...wow...this is kind of a hard one so.............
I think the answer is A. by plants and animals as a source of water.
My second answer/guess...IF i'm rough would be C. by humans for drinking and bathing.
Answer: Gneiss is a type of metamorphic rock that forms when a sedimentary or igneous rock is exposed to extreme temperatures and pressure
Explanation:
The spread began in the 7th to 9th century, originally brought to North Africa under the Umayyad Dynasty. Trade networks were extensive, spanning through north and west Africa which created a medium in which islam peacefully spread through the merchant class.
Answer:
<u>Waste water is any water that is affected by human use and is combination of all domestic, industrial and agricultural stuff</u>s.
Explanation:
- It can be also called as the stormwater or surface runoff, or sewer infiltration. This type of water can include the domestic wastes involved in households like toilet flushes, dishwashers, washing machines, and detergents. This type of water in developing countries if often treated with septic tanks, drain fields, and onsite sewage systems.
- Chemical or physical pollutants include heavy metals, organic and inorganic soluble matter such as urea, gases as hydrogen sulfide, various oxides and toxins of pesticides and methane.
- Use of micropollutants like plastics, and thermal pollutants like heat energies derived from the power station and industrial manufactures. Certain biological sources of pollutants like Bacteria, Virus, and Protozoa, and parasites like organisms.
- It can include parasitic like insects, arthropods, and others that reduce the biological oxygen capacity of the freshwater stream and decline in the fish population due to the nutrification of water and contaminants due to the wastewaters.
