Veintiocho 28days in february
Advancement technology in enabled development of more powerful microscopes if thats what its asking you
The water cycle transports a plethera of microorganisms, and many of them are harmful for human beings. These include bacteria, protozoa, viruses, and lavae of high-ordered parasytes. Some of the aforementioned are Giardia, Cyptospordium, Shigella, E. coli, hepatitis A virus, and enterovirus.
Waters can also carry chemical wastes such as pesticides, and heavy metals dissolved in them. It is common to hear about acid rain as a result of pollution, and it originates as a result of mixing sulphur dioxide and nitrogen oxide with water molecules in the atmosphere.
There are several technological improvements over the past 100 years that have made the availability of clean water to communities a lot easier, and not only depend on boiling water. Filtration is the most common practice, it traps most unwanted particles and microorganisms, but it should be accompanied with chemical disinfection, which uses halogens to oxidize essential celluar structures and enzymes. In the present, chemical disinfection can even be achieved with adding a pill to a specific volume of water.
Answer:
1. Savanna, 2. Portuguese, 3. Sahara Desert, 4. plateau, 5. Ethiopian Highlands
Explanation:
- Tropical savanna consists of broad grasslands which are dotted with small trees and shrubs of all types. These are home to diverse flora and fauna and sometimes the grasses can grow up to tall as elephants.
- Portuguese were the first Christian settlers of the eastern African coasts and these were to first take over the East African countries like Kenya, Indian ocean and Tanzania.
- Sahara desert is the world's largest dry and barren desert is outside the polar areas located in northern Africa. And covers a surface area of 3.5 miles.
- A flat landscape is called a plateau, if this is relatively high and flat then its table or a plateau.
- Etho[ian highlands are the rugged mountains that are located in the horn region of northeastern Africa. Having a height of 4,550 meters above sea level and is considered to the roof of the world.
Answer:
Oceanic trench
Explanation:
On the places where there's convergent plate boundary between an oceanic and continental plate, there's a subduction zone. The oceanic plate is denser, heavier, lower than the continental plate. Because of that, the oceanic plate is moving below the continental plate, slowly getting into the mantle where it is melted and destroyed. On the boundary itself, a gap opens up between the plates, a gap that is under constant pressure and geological activity. This gap is basically a valley at the bottom of the ocean, being much deeper than the surrounding area. The term used for these places is an ocean trench, and there's lot of them around the world where there's a convergent plate boundary between an oceanic and continental plate. The best known of these ocean trenches, also being the deepest place on Earth, is the Mariana trench, located on the boundary between the Filipino and the Pacific plates.
