The basic thing that must happen are that they must be able to reproduce healthy off-spring to create new generations. Once that stops, the rest of them will die off, leaving them extinct. Food, clean water, clean air and some kind of interaction with another living thing will keep it's children and itself healthy and able to continue the species existance.
Life cycle must keep repeating for the nation to grow and for each and single living thing to live.
Plants must complete their life cycle to fulfill their true purpose. For plant's life cycle to continue a seedling must live long enough to produce new seeds.
Water, carbon, oxygen, nitogen, and phosphorus are 5 or the most important substances for life. An ecosystem must be able to cycle these kinda of matter in order to support life. So I would assume that if matter could not cycle through and ecosytem then life would not be supported.Hope this helps!
i have no clie
yes
Allopatric Speciation usually must happen
Depends on species.
what is the life cycle of a record
Nope!
Very little new matter enters the Earth system, so exsisting matter must cycle continuously to for this planet to support life
It must be ate and pooped out. then it uses the nutrients from the poop to grow.
phylum, class, order, family, genes and species.