A. collapsing dust clouds
A science procedure has steps chronological order to create or observe a science experiment. Similarly, a recipe has steps in chronological order to create something delicious.
Answer:
The Berlin tragedy is no longer a problem because the wall was taken down, and families were able to reunite and have their families together again.
Explanation:
#CarryOnLearning
The vast pollution which occurs globally can have a significant impact on air quality on a local scale. The reason for this is quite simple: polluted air can easily get trapped beneath a cloud cover, or be literally "blown" away to other locations, and when much polluted air gets accumulated, it can have devastating heath effects on a local population, not just to humans, but to animals and plants as well. Overall, the vast global pollution can effect the smallest of regions on an unprecedented scale.
