Answer:
Roosevelt was a strong supporter of the conservationism. He established the National Parks of the United States. He was an avid hunter and enjoyed the natural environment. He recommended William Howard Taft however when he sold national park land to coal and oil companies president Roosevelt was outraged and eventually ran against him for president and beat him though he ultimately lost to Woodrow Wilson due to the splitting of the republican party
Explanation:
Plate Tectonics, that would be the answer <span />
Answer:
The Marsupials would be extinct as they wont be able to migrate to South America and Australia.
Explanation:
- If the plate tectonics would be in a position as they are in today then the marsupials population that is found today in Australia and other countries would not have been possible as the plate tectonics would not allow them to migrate to these places.
- Even if they would migrate to another pace they would not survive as these creatures don't know how to travel longer distances and would eventually die of starvation.
Our planet, Earth appears blue due to the mass amounts of water and lacks on its surface.
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.
