1- Maize Mixed Farming System
2- Irrigated Farming System
3- Rice Tree Crop Farming System
Arid
<span>Lacking moisture, especially having insufficient rainfall to support trees or woody plants</span>
Answer:
The illegal migration has created socio-political and economic problems and lead to the growth of population in the southern states.
Explanation:
- Most of the migrants include individuals from north Africa and sub-Saharan regions that have migrated to the southern states of Europe like Spain and Italy. Many have come from Morocco, Algeria Tunisia, and other places.
- They have affected the population diversity of the country and permanently settled in France, Netherlands, Spain, Germany, and Belgium. Since 2000 illegal migrations have resulted in rising of conflict and poverty.
- Some positive effects of migration include the education and job aspects while the negative impacts can be seen as the growth of slums and asylums and child laborers. Their impact on resource usage and economic development has changed in many European cities.
Answer:
B and C
Explanation:
B. In a given rock sample, the amount of Silicon-32 isotopes gets divided in half about every 170yrs.
This is the concept of half-life. Half life is the time take for half of a radioactive isotope to disintegrate. The shorter the half life the faster the isotope disintegrates.
From the question, we were told that it would take 170yrs for half of the isotope of Silicon to disintegrate to Phosphorus. This is the half life.
C. The half life can be used to determine the amount of Si-32 that has decayed from the time closure temperature was reached.
The closure temperature is very important in radioactivity. It is the temperature at which a system has cooled and there is no resulting disintegration of parent and daughter isotopes.
From first order kinetics, we know that the rate at which radioactive elements decay at any time is directly proportional to the number of radioactive atoms present. A knowledge of the half life helps to figure out the number of atoms that has decayed in time.
Answer:
binakol
Explanation:
hope this helped,brailiest?
