Answer:
B is the answer!!
Explanation:
American Indian tribal recognition in the United States most often refers to the process of a tribe being recognized by the United States federal government, or to a person being granted membership to a federally recognized tribe. There are 573 federally recognized tribal governments in the United States.
<u>Answer:</u>
<em>B. surveying
</em>
Surveying is the method of determining the distance and elevation using instruments and geometry.
<u>Explanation:</u>
Surveying is methodology used to determine the area of the land in real estate sector and infrastructure projects. It is the coalescence of mathematical calculation and scientific concepts. It not only measure the area size, which is also used to measure the elevation like height of Himalayan mountain, dam strength and so on. Survey of India is established in 1767, it is the oldest department in India in engineering field.
Answer: The dam traps sediments that previously had been carried downstream
Explanation: Due to the presence of a barrier(dam) sediments carried by the river colorado are being trapped.
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.
<span>
Answer 1: The correct answer is the
crust and the upper mantle.
The lithosphere refers to a solid, rocky part of the Earth, that is the Earth's outermost layer. It is comprised of the crust and upper mantle (refer to attached image). The lithosphere is around 100 km deep.
Answer 2: The correct answer is its
crust.
The Earth's crust refers to the outermost rocky shell of the Earth where organisms live (refer to second image). The crust is made of solid rocks, including igneous, sedimentary and metamorphic rocks. The Earth's crust is around 30 km deep.
Answer 3: The correct answer is
iron and nickel.<span>
The Earth's core refers to the innermost or central part of the Earth. It lies around 2900 km beneath the Earth's surface and is spherical in shape. The Earth's core is comprised of an alloy (mixture) of the metals iron and zinc.It is made of two layers: the outer core and the inner core. </span></span>