The correct answer is - erosion.
The sites of the major monuments over time show signs of erosion. As all these sites are made out of natural materials they are not prone to the effects of the erosion. Little by little, over time, they have small parts of them removed with this natural process, thus changing their initial forma and shape, but also threatening to totally destroy them. The erosion has increased in the past century because of the acid rains as they have very high corrosive power.
Because of this, lot of sites of major monuments have been restored, new layers are added, for both making them look as they initially did, and for bigger protection of the natural elements.
The term, "Synapsis" is associated with the process of crossing over. The google definition is, "The fusion of chromosome pairs at the start of meiosis."
Hope this helps!
Below are some traffic safety and streets issues facing communities: ... road accident - 40% of the road accident is caused by street lighting. it should be improved into more visible from drivers. increase the number of road humps, this is for drivers who falls asleep while driving.
Answer: t=-5.651
Explanation:
Let 
be the population mean number of hours a week answering their email.
As per given we have
Sample size : n= 783
Sample mean : 
Sample standard deviation: s=7.23
Since population standard deviation is unknown, so our test -statistic has a t-distribution.
Test statistic : 
∴ The test statistic : t=-5.651
