no disco dancer
As a precaution to keep a umbrella with you after a rain is wise, though not necessary.
The rain alarm was invented by Andrew Grimes. It is a device that alerts users when rain is approaching so they can take necessary precautions.
yes or else it wouldn't rain
There are some areas/places in the world who experience lack of rain fall seasonally and their irrigation is necessary .
protect biodiversity
By some cultures, it is believed that a (rain) dance would bring rain. This was crucial because rain is necessary to grow crops. I believe there were other dances each with different meanings. People would do these dances to please gods. But if you are asking how to do a rain dance, I have no idea.
A rain gauge typically consists of a cylindrical measuring tube, a funnel to guide the rain into the tube, and a measuring scale to read the amount of rainfall collected. Some rain gauges may also have a base for stability.
It doesn't, and they don't. Koalas live in Forests or stands of eucalyptus trees, which don't grow in rain Forests.
It brought much needed rain
The occurrence of a rainbow at noon typically indicates that there are rain clouds nearby that may bring more rain in the near future. The angle of the sun at noon can create the conditions necessary for the formation of rainbows when there are rain clouds present.
It brought much needed rain
Leaves collect and funnel rain and soak up the sunshine necessary for photosynthesis.