The countries that are located on the equator out of this list are:
Somalia
Democratic Republic of the Congo
Uganda
NOT LOCATED ON EQUATOR: Libya that is located in northern africa
Biochemical sedimentary rocks are sedimentary rocks created by the buildup of organic carbon (dead plant debris) in low-oxygen conditions (such as swamps).
When organisms utilize elements dissolved in air or water to develop their tissue, biochemical sedimentary rocks form. The calcareous skeletons of creatures such as corals, mollusks, and foraminifera are used to make most varieties of limestone.
Shells and bodies of submerged creatures are used to build biochemical sedimentary rocks. Chemical components from the water are extracted by living creatures and used to form shells and other body parts. Aragonite, a mineral related to and usually replaced by calcite, and silica are among the constituents.
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Answer:
Answered
Explanation:
(i) 1 Astronomical Unit (A.U.) = 1.496 x 10^8 Km.
Therefore, distance of Voyager I from Earth = 71 AU = 71 x 1.496 x 10^8 = 1.062 x 10^10 Km.
(ii) The nearest star to Earth than sun is the Proxima Centauri in the Alpha Centauri system. The Proxima Centauri is 4.22 light years away from Earth.
As, 1 Light year = 63241.1 AU
The distance of the Proxima Centauri from Earth = 4.22 x 63241.1 AU = 266877.3 AU
The distance of the Voyager I from Earth = 71 AU
The number of times the distance of the Proxima Centauri from Earth is greater than that of Voyager I is = 266877.3 / 71
= 3758.835 times.
(iii) Speed of light is 1.079 x 10^9 Km/hr
Light travels 1.079 x 10^9 km in 1 hr
Therefore, 1. 062 x 10^10 Km is traveled by light in = (1.062 x 10^10) / (1.079 x 10^9) hr = 9.84 hours
That means when Voyager I was 71 AU from Earth, a observational data from Voyager I at the speed of light took 9.84 hours to reach Earth.
