Question: 1.why cant we see the other planets apart from the earth? 2.why mercury and venus are referred to as morning and evening stars yet they are planets?/ 3.how is acid rain formed? 4.why does the strength of legs and hands vary from one person to another?

Grace Kago answered on 7 Jun 2019: last edited 7 Jun 2019 5:15 am

1. I think that there are some other planets that can be seen with your naked eyes like Mercury, Venus, Mars, Jupiter and Saturn if you know where to look in the night sky.
Source (and instructions to tell you where to look) https://www.space.com/31704-see-5-bright-planets-in-night-sky.html
2. I think it has to do with when they’re most visible/where they are when the sun rises?
Source:https://www.space.com/31851-what-is-morning-star-evening-star.html
3. “Acid rain is one of the consequences of air pollution. It occurs when emissions from factories, cars or heating boilers contact with the water in the atmosphere. These emissions contain nitrogen oxides, sulfur dioxide and sulfur trioxide, which when mixed with water become sulfurous acid, nitric acid and sulfuric acid.”
Source: https://www.activesustainability.com/climate-change/what-is-acid-rain/
4. Because we are all unique and different! Also, some people exercise more than others, so they have developed their muscles a bit more, making them a bit stronger than others!