I believe it's the ovule.
Answer:
Changes that cannot be reversed are called irreversible changes
Example: if you cook an egg or if something goes bad. these changes can not be reversed.
<span>A rainforest is an example of a community. A community refers
to the interaction of various species within a common geographic location.
Communities are also known as biological communities, where species interact
and co-exist with another to thrive and survive their given environment. </span>