It depends on the particular ecosystem and why and how it was destroyed. It can take just 2 years or over 100 years depending on the different factors. Sometimes ecosystems never recover.
because it helps to move something from one side to another
Because fossil fuels are like dead plants, coal, oil that have been in the ground for a while that can be used for gasoline, and other things. while fossils are like prehistoric animals, and historic discoveries like bones
Its difficult for those who have a diabetic issue bevause in most cases, they nerd to be aware of their blood sugar levels. If for example, they wanted to gobout to eat, they need to make sure they have their paxk with insulin, strips, and a keeping track of time to make sure that their needs are met.
I hope this helps you!
The answer is Interspecific competition.