Oral route. Many drugs can be administered orally as liquids, capsules, tablets, or chewable tablets. Because the oral route is the most convenient and usually the safest and least expensive, it is the one most often used. However, it has limitations because of the way a drug typically moves through the digestive tract.
Measuring Distances to Stars. Astronomers use several techniques for discovering how far away an object is. The first is called trigonometric parallax and is based on geometry, but it is only good for up to about 500 light-years.
Which planet is about 30 times further from the sun than Earth is?   Neptune, at mean distance of 4,497,070,000 km, compared with Earth at 149,597,900km.arth's farthest distance (aphelion) occurs in early July each year when it is approximately 94,555,000 miles (152,171,000 km) from the sun. The distance is one AU (astronomical unit) from the sun. One AU is 93 million miles, which is 8.3 light minutes. 50 people found this useful.