A wild plant growing where it is not wanted and in competition with cultivated plants.
1. used for building
small crystals
2. covers ocean floor
formed below the surface
3. extrusive igneous rock
granite
4. intrusive igneous rock
basalt
5. slow cooling
large crystals
6. fast cooling
formed on the surface
Answer:
Brain drain is the emigration of individual who are highly proficient or qualified in their field of study .
Explanation:
Brain drain is the emigration of individual who are highly proficient or qualified in their field of study . The departure of these group of professional may be due to better living condition or higher salary.
In other words brain drain is when a country losses it talented or highly skilled or educated workers to other countries through migration. Brain drain is considered a big problem to the society because competent hands migrates to another country causing more economic hardship to the country they left. The emigrants contribute to the expertise of another country. This kind of movement occurs from a developing countries to a developed country.
The impacts of Brain drain on developing countries are numerous but it is more on the negative side.
The phenomenon has caused a harmful effect on developing countries mostly in Africa. As this talented individuals move to a developed countries they become richer and the developing countries becomes poorer. The resulting impact in developing countries are lack of innovation and industrial growth, economic instability which leads to unemployment , Political instability and loss of the country's investment in education , loss of tax revenue and shortage of skilled workers.
The positive impact is that the workers from developing countries tend to improve in skills . Another benefits is remittance; this skilled workers from developing countries might send money home and this might stimulate the economy.
Answer:
One example of how a water system is contaminated by non-point source pollution is Several inches of acid rain fall over a lake.
Explanation:
Examples of non-point source pollution are mostly associated to rainfall or even snow melt. All the other alternatives in this question are examples of point source pollution. They all come from direct sources. The rainfall, however, is a diffuse form of pollution since it is spread throughout the lake.
