Because tropical levels used to be broken because temperatures hasn't varied in the years and history of global temperatures and history.
1.) atom ; tissue
2.) cell
3.) organ system
4.) true
5.) atom
6.) Particle
^-^
I got two, but I could be wrong.
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.
Did you mean is or is this a true false
