Q: (CNN) -- Four months after a criminal investigation began into the disappearance of an Oregon boy, officials continue to ask the public for leads and tips.

Thursday marks Kyron Horman's 8th birthday. Desiree Young, Kyron's biological mother, said she will celebrate the birthday by releasing red balloons outside a church in Medford, Oregon.

His stepmother, Terri Horman, said she dropped him off at Skyline Elementary School on the morning of June 4. She has been the subject of intense scrutiny for several months.

In divorce filings, her ex-husband, Kaine Horman, said he believes that Terri Horman "is involved" in the boy's disappearance.

Court documents also allege Terri Horman attempted to hire a man to kill her husband.

Meanwhile, Skyline Elementary began its first day of classes for the year on Tuesday with additional security measures to protect the children and staff.

In a letter to parents, Principal Ben Keefer said video cameras will be installed this weekend at Skyline.

"These cameras will show external views of the building as well as the main hallway," he wrote.

Also, security procedures will be reviewed to ensure they are effective, he added.

Tributes, messages, posters and cards that adorned a "Wall of Hope" for Kyron were moved from school property to a fence outside a nearby fire station, said the Multnomah County Sheriff's Office.

"We're happy that the fire district can provide this service to the community," said Tualatin Valley Fire & Rescue Communications Officer Brian Barker. "Our hearts go out to Kyron's family and we all hope for a positive resolution to this case."

Answer the following questions:
1. Who was kidnapped?
2. Who dropped him off at school?
3. Who does she say could be the suspect?
4. Who tired to murder him?
5. What was placed for him at the school?
A: 1. Kyron Horman
2. Terri Horman
3. Terri Horman
4. Terri Horman attempted to hire a man to kill her husband.
5. "Wall of Hope"

Answer the questions at the end based on the text.

In biology, kingdom (Latin: regnum, plural regna) is the second highest taxonomic rank, just below domain. Kingdoms are divided into smaller groups called phyla. Traditionally, some textbooks from the United States used a system of six kingdoms (Animalia, Plantae, Fungi, Protista, Archaea/Archaeabacteria, and Bacteria/Eubacteria) while textbooks in Great Britain, India, Australia, Latin America and other countries used five kingdoms (Animalia, Plantae, Fungi, Protista and Monera). Some recent classifications based on modern cladistics have explicitly abandoned the term "kingdom", noting that the traditional kingdoms are not monophyletic, i.e., do not consist of all the descendants of a common ancestor.

When Carolus Linnaeus introduced the rank-based system of nomenclature into biology in 1735, the highest rank was given the name "kingdom" and was followed by four other main or principal ranks: class, order, genus and species. Later two further main ranks were introduced, making the sequence kingdom, phylum or division, class, order, family, genus and species. In the 1960s a rank was introduced above kingdom, namely domain (or empire), so that kingdom is no longer the highest rank.

Prefixes can be added so "subkingdom" ("subregnum") and "infrakingdom" (also known as "infraregnum") are the two ranks immediately below kingdom. Superkingdom may be considered as an equivalent of domain or empire or as an independent rank between kingdom and domain or subdomain. In some classification systems the additional rank "branch" (Latin: "ramus") can be inserted between subkingdom and infrakingdom (e.g. Protostomia and Deuterostomia in the classification of Cavalier-Smith).

1. Which rank is this article about?
2. What is above it?
3. And below it?
4. How many kingdoms does the US recognize?
5. And elsewhere?
6. How many kingdoms do they agree on?
7. Which ones are those?
8. What kingdoms does the US have that the others don't?
9. And which ones do others have that the US doesn't?
10. Who created this system?
11. When?
12. What science is this part of?
13. Was kingdom the highest rank at first?
14. Is it still?
15. Why not?
16. What's another name for domain?
17. Originally how many ranks were below kingdom?
18. What were they?
19. Is it still like that?
20. What happened?

Numbered answers:

A: 1. Kingdom
2. domain
3. phyla
4. Six
5. Five
6. Four
7. Animalia, Plantae, Fungi and Protista
8. Archaea/Archaeabacteria, and Bacteria/Eubacteria
9. Monera
10. Carolus Linnaeus
11. 1735
12. biology
13. yes
14. no
15. in the 1960s a rank was introduced above kingdom
16. empire
17. four
18. class, order, genus and species
19. no
20. later, 2 other ranks were introduced

Answer the questions at the end based on the text.

Everyone has a family name. My name is Jane Armstrong. Armstrong is my family name. What does Armstrong mean ? Does it mean my arms are strong? But I am a slim girl. I don't like strong arms. My best friend is Lucy Long. Is she a long or a tall girl? No, she isn't. She is short. But she has long hair. Some family names come from jobs. My cousin's name is James Cook. Does it mean he can cook? No, he can't. And he doesn't like cooking at all. He only likes eating nice food. And he likes the TV show A Bite Of China (<<>> ), because it is all about nice food. Some people get family names from places. Ann Hill is my classmate. Is there a hill near her home? Yes, there is one behind her home. But her uncle, Tom Hill, lives 20 kilometers from a hill.

1. What does everyone have
2. who is slim
3. what doesn't girl like
4. what are strong
5. who is best friend
6. who is short
7. what is long
8. what comes from jobs
9. who is cousin
10. can he cook
11. what does he like eating
12. what show does he like
13. what is show about
14. who is classmate

Numbered answers:

A:
1. family name
2. girl.
3. strong arms
4. arms.
5. Lucy Long
6. She
7. hair
8. family names
9. James Cook
10. No
11. nice food
12. A Bite Of China
13. nice food
14. Ann Hill