Answer the questions at the end based on the text.

The Silurian is a geologic period and system spanning 24.6 million years from the end of the Ordovician Period, at million years ago (Mya), to the beginning of the Devonian Period, Mya. As with other geologic periods, the rock beds that define the period's start and end are well identified, but the exact dates are uncertain by several million years. The base of the Silurian is set at a major OrdovicianSilurian extinction events when 60% of marine species were wiped out.

A significant evolutionary milestone during the Silurian was the diversification of jawed and bony fish. Multi-cellular life also began to appear on land in the form of small, bryophyte-like and vascular plants that grew beside lakes, streams, and coastlines, and terrestrial arthropods are also first found on land during the Silurian. However, terrestrial life would not greatly diversify and affect the landscape until the Devonian.

The Silurian system was first identified by British geologist Roderick Murchison, who was examining fossil-bearing sedimentary rock strata in south Wales in the early 1830s. He named the sequences for a Celtic tribe of Wales, the Silures, inspired by his friend Adam Sedgwick, who had named the period of his study the Cambrian, from the Latin name for Wales. This naming does not indicate any correlation between the occurrence of the Silurian rocks and the land inhabited by the Silures. In 1835 the two men presented a joint paper, under the title "On the Silurian and Cambrian Systems, Exhibiting the Order in which the Older Sedimentary Strata Succeed each other in England and Wales," which was the germ of the modern geological time scale. As it was first identified, the "Silurian" series when traced farther afield quickly came to overlap Sedgwick's "Cambrian" sequence, however, provoking furious disagreements that ended the friendship. Charles Lapworth resolved the conflict by defining a new Ordovician system including the contested beds. An early alternative name for the Silurian was ""Gotlandian"" after the strata of the Baltic island of Gotland.

1. How long the Silurian period lasted?
2. When did it start?
3. When it ended?
4. What signifies the Silurian period?
5. What else?
6. Where?
7. like?
8. How about plants?
9. Was there lot of diversification?
10. Until when?
11. Who first came up with this period?
12. Who was he?
13. From which country?
14. When he was doing his research?
15. Where?
16. Did he name it after something?
17. After what?
18. What they were called?
19. Who inspired him in that?
20. What he discovered?

Numbered answers:

A: 1. 24.6 million years
2. end of the Ordovician Period
3. beginning of the Devonian Period
4. diversification of jawed and bony fish
5. Multi-cellular life
6. on land
7. bryophyte
8. found on land
9. no
10. Devonian period
11. Roderick Murchison
12. geologist
13. Britain
14. 1830s
15. south Wales
16. yes
17. Celtic tribe of Wales
18. Silures
19. Adam Sedgwick
20. Cambrian sequence

Answer the questions at the end based on the text.

(CNN) -- Hilary Duff says her new album is "very positive" but admits that it started out "a lot heavier and a lot darker" because of the separation from her husband, Mike Comrie.

"I'm separated from my husband right now, which has been a very difficult thing to go through," she told Billboard's "Pop Shop" podcast. "In the beginning, the album was a lot heavier and a lot darker, because I had to get that out. Once I did get that out, a lot of fun came."

Duff married Comrie, a former pro hockey player, in 2010 after dating for three years. Their son, Luca, was born in 2012. Duff and Comrie announced their separation in January.

Duff, 26, admits that she's "nervous" after being away from music for seven years. Her just-released single, "Chasing the Sun," is from her still-untitled album, which will be her first studio release since 2007's "Dignity."

She says she first started thinking of new material when she was pregnant with her son. After having the child and taking another year, she was even more anxious.

"I felt like I was missing a big part of myself," she said.

Duff established a successful singing career on the heels of her popular Disney show, "Lizzie McGuire," which aired from 2001 to 2004. She spent most of her teenage years touring and says that turning 20 was a big factor in leaving the road.

"It was time for me to be a person, and the break just ended up being a long time," she said.

1. What did Duff star in?
2. How long did that last?
3. What did she start when that ended?
4. What was her last release before her new single?
5. What year did it come out?
6. How long has she been out of that business?
7. What is the name of her new song?
8. How does she feel?
9. How old is she?
10. Who did she marry?
11. When?
12. Did they date first?
13. How long?
14. How long were they married before they had a child?
15. What is his name?
16. Are they still together?
17. Did they get a divorce?
18. What did they do?
19. When did she come up with new stuff for her music?
20. How long did she wait after he was born?

Numbered answers:

A:
1. Lizzie McGuire
2. from 2001 to 2004
3. a successful singing career
4. seven years
5. 2007
6. seven years
7. Chasing the Sun
8. nervous
9. 26
10. Mike Comrie
11. 2010
12. Yes
13. three years
14. 2 years
15. Luca
16. No
17. No
18. Separated
19. when she was pregnant with her son
20. another year