Answer:
1. the orbital radius of mercury is 5.79 x 10^7 km.
2. the orbital radius of Venus is 1.08 x 10^8 km.
3. the orbital radius of earth is 149.6 × 10^6 km
4. the orbital radius of mars is 228 million km
5. the orbital radius of Jupiter is 775.88 million km
6. the orbital radius of Saturn is 1.4963 billion km
7. the orbital radius of Uranus is 2.9626 billion km
8. the orbital radius of Neptune is 4.4768 billion km
Explanation:
The orbital radius refers to the distance of the planets from the sun. Those planets which have large orbital radius are far from the sun while those planets which have low orbital radius are near to the sun. The orbital radius of mercury is the lowest while the orbital radius of Neptune is the highest.
Cells do contain sub structures called organelles. Each organelle within the cell performs specific functions. According to cell theory, cells are the basic units of life.
Cells do not come together to form molecules, because molecules are significantly smaller than cells and are present inside of the cell’s various structures.
The gravity of the Sun keeps the planets in their orbits. They stay in their orbits because there is no other force in the Solar System which can stop them.
The biosphere includes mammals, fishes, and birds.