Answer:
2000
Explanation:
although hayley comet was around 10,000 years old,the average comet it 2000
The correct answer is <span>2.Planting trees throughout a flood zone
If there are many trees then the land is firmer and more tightly connected to the tree and erosion is prevented.</span>
Answer: Temperature in the Earth's inner core
Explanation: The temperature in the inner core is what is responsible for the movement in the mantle
Answer:
See solution and explanation below
Explanation:
a) From;
N/No = (1/2)^t/t1/2
1/8 = (1/2)^t/1.25 * 10^9
(1/2)^3 = (1/2)^t/1.25 * 10^9
3 = t/1.25 * 10^9
t = 3 * 1.25 * 10^9
t = 3.75 * 10^9 years
b)
N/No = (1/2)^40,110/5,730
N/No = (1/2)^7
N/No = 1/128
percentage remaining after 40,110 years = 1/128 * 100 = 0.78%
c) N/200 * 10^-9 = (1/2)^4.26 * 10^9/0.710 * 10^9
N/200 * 10^-9 = (1/2)^6
N/200 * 10^-9 = 1/64
64 N = 200 * 10^-9
N= 3.125 * 10^-9 g
d) Radiocarbon dating can not be used to determine the age of the solar system since the solar system is as old as the universe and was formed billions of years ago. Radiocarbon dating can only be accurately used to obtain the age of objects of plant or animal origin between 1000 - 10000 years old.
The Arctic Circle is roughly 66.5 degrees NORTH of the Equator, and the Antarctic Circle is roughly 66.5 degrees SOUTH of the Equator.
So the difference in latitude between these two circles is roughly
2 · 66.5° = <em>133 degrees</em>