Fossils can provide the time a species existed through carbon-14 dating, and can also show structures within the species that are similar to other organisms on earth today or other organisms before/slightly after that fossils existence.
Energy & Repair/Maintenance
Once these resources are used up, they cannot be replaced. Humanity would be in trouble because we are dependent on them to supply most of our energy needs.
A collection of tissues working together is an Organ
any sort of ancient fossil would be my quess. also i am on achallenge to see how many friends i can get on brainly so pls friend me