Answer:
Population pyramids are used by demographers as a tool for understanding the make-up of a given population, whether a city, country, region, or the world. Learning about, using, and understanding these pyramids is an important part of AP Human Geography and AP Environmental Science.
Explanation:
I hope this help
The correct answer is the following.
Rank the following areas in order of largest to the smallest change in average temperature since 1880.
This is the correct rank.
1.- Eastern Pacific Ocean.
2.- Western Europe.
3.- North Canada.
4.- Southern Africa.
5.- Antarctic Ocean Australia.
Scientists agree that 2018 was one of the warmest years on planet earth. The weather phenomenon called "El Niño" o "La Niña" directly affects the temperature of the planet each year. The region of the Mediterranean Sea had the most elevated temperatures. On the other hand, regions of North America and Canada had lower temperatures than average.
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.
D. is the correct answer.
<span>hailstones can grow quite large before finally falling to the ground, hail can cause tremendous damage to crops, buildings, and vehicles.</span>
