Which of the following best describes why longitudinal waves cannot travel in space?

a) longitudinal waves can travel without a medium

b) gravity interferes with the travel of longitudinal waves in space

c) there are too few air particles in space for longitudinal waves to travel

d) space contains too many particles that interfere with the travel of longitudinal waves

There are too few air particles in space for longitudinal waves to travel.

Explanation:

1) I took the test and it was correct.

2) Longitudinal waves need a medium to travel through and in space theres really nothing the wave can use for a medium.

the correct answer is - d. china has a large and growing population.

the fact that china has a large (the biggest) population, and it is still growing, doesn't hinder the agriculture production in the country. in fact, it can for increased production in the agriculture, since there's more labor force, as well the sheer mass of people produces lots of scientists that come up with new inventions as to how to improve this sector. nice example is the inner mongolia region in china, in general dominated by the gobi desert, but few scientist came up with a nice idea as to how to make the region productive by using plants that are very resistant to droughts, so lots of people have been employed, and the region is becoming greener and greener each year, and the production of food in this region is also increasing.