Answer:
Option (D)
Explanation:
The asteroids are the rocky bodies or smaller celestial objects that are present dominantly in the asteroid belt, which is far away from the sun. This belt is present between the planet Mars and Jupiter. They are comparatively of smaller size, ranging from about a few meters to hundreds of meters and does not have a reflecting surface. Due to this, there occur difficulties in tracking them. There are millions of asteroids in the asteroid belt and are continuously moving at a speed of roughly 80,000 km/hour. There occurs frequent collision between them.
Thus, they are difficult to detect when they cross the orbit of earth.
Hence, the correct answer is option (D)- All the above.
Ocean tides are the result of differences in the gravitational force between
the sun and the Earth's near side and far side, and ditto for the moon.
Answer:
correct option is (a) 420-440 Ma
Explanation:
as we know that Henrietta town in the Monroe County , United States
and in Henrietta large number of rocks are found and major are Sedimentary and Igneous rocks
and porphyritic in nature ( Basalts and diorite ) also found in the Henrietta and They are subject to absolute dating method
as the results are found to be that the rocks were about 420 - 440 million years old
so correct option is (a) 420-440 Ma
They must be completely aware and be a expert otherwise they will not be able to keep everything under control.
