Phospholipids is the answer
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.
A nucleotide is made up of a base, a sugar and a phosphate group.
Beyond size, the main structural differences between plant and animal cells<span> lie in a few additional structures found in </span>plant cells. These structures include: chloroplasts, the cell<span> wall, and vacuoles.</span>
Absolute I think is the right answer.