Complex sentence: Other items have been added to the museum collection through the years, and it is now home to a collection of 525,000 insects, 50,000 minerals and rocks, 30,000 plants and 5,000 microscopic slides.
Split into simpler sentences: Other items have been added to the museum collection through the years. It is now home to a collection of 525,000 insects, 50,000 minerals and rocks, 30,000 plants and 5,000 microscopic slides.