Seven countries make up the region of Central America, two of them are Belize and Costa Rica.
Answer: Cropping patterns
Explanation: refers to proportion of area under different crops at different points of time. It also indicates the time and spatial arrangement or sequence of crops and / or fallow in a particular land area.
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.
The correct answer is - the air.
The Namib Desert is one of the driest places on the planet and that is due to the cold and dry ocean currents alongside the southwestern part of Africa which are not providing the right conditions for precipitation to occur.
Even though there's no rain, because the Namib Desert is very hot, and the ocean currents very cold, the end result is mist that appears every morning, as well as dew.
The plants living in this desert have evolved in accordance to the conditions, so instead of being dependent on their roots for getting water, they get the majority of the water through their leafs and skin, directly from the air.
Answer: When democracy falls, usually, the country's elites feel that democracy no longer “works” for them so they push for a dictatorship with hopes of stabilizing the government. With only 1 person in power, things should seemingly run smoother. However, in most cases in the long run this only divides a country further into turmoil.
Explanation:
Dictators may rise to power in a democracy through several ways. One way is the result of political polarization, where the competing political sides no longer want to cooperate with one another, allowing violent or extremist groups to take over politics instead.
Also, democracy can fall when a country’s elites feel that democracy no longer “works” for them. When these elites feel that losing an election may mean forfeiting their power and influence over the country, they may seek to take over the country by force, turning it into a dictatorship. Or, democracies can fall the other (more subtle) way, when elites first grab on to power via democratic means, before then stripping away democratic rights.
