3.what would be the best place to build an optical telescope?

4.a measure of the amount of light given off by a star is its?

5.the first artificial satellite to orbit the earth was?

About 70 percent of the earth's surface is water-covered, and about 96.5 percent of all earth's water is salt water. identify the watery feature on earth that is made of freshwater rather than salt water. a) bay b) glacier c) ocean d) sea it is not incomplete this is the true question

Why is permeable soil best for plants that need a lot of drainage?

Light waves travel than sound waves.