Simplify the following text for a Grade 10 native English-speaking person.
Original: Under the Endangered Species Act in the United States , `` threatened '' is defined as `` any species which is likely to become an endangered species within the foreseeable future throughout all or a significant portion of its range '' .
Simplified: Under the Endangered Species Act in the United States , `` threatened '' means any species which is likely to become endangered in the near future , in all , or a large part of its range .