Q: The Canadian Hot 100 is a music industry record chart in Canada for singles, published weekly by "Billboard" magazine. The Canadian Hot 100 was launched on the issue dated June 16, 2007, and is currently the standard record chart in Canada; a new chart is compiled and officially released to the public by "Billboard" on Tuesdays.

The chart is similar to "Billboard"s US-based Hot 100 in that it combines physical and digital sales as measured by Nielsen SoundScan, streaming activity data provided by online music sources, and radio airplay as measured by Nielsen BDS. Canada's airplay chart is the result of monitoring more than 100 stations representing rock, country, adult contemporary and Top 40 genres.

The first number-one song of the Canadian Hot 100 was "Umbrella" by Rihanna featuring Jay-Z on June 16, 2007. As of the issue for the week ending October 7, 2017, the Canadian Hot 100 has had 117 different number-one hits. The current number-one is "Rockstar" by Post Malone featuring 21 Savage.

The chart was made available for the first time via "Billboard" online services on June 7, 2007 (issue dated June 16, 2007). With this launch, it marked the first time that "Billboard" created a Hot 100 chart for a country outside the United States. "Billboard" charts manager Geoff Mayfield announced the premiere of the chart, explaining "the new "Billboard" Canadian Hot 100 will serve as the definitive measure of Canada's most popular songs, continuing our magazine's longstanding tradition of using the most comprehensive resources available to provide the world's most authoritative music charts." The "Billboard" Canadian Hot 100 is managed by Paul Tuch, director of Canadian operations for Nielsen BDS, in consultation with Silvio Pietroluongo, "Billboard"s associate director of charts and manager of the "Billboard" Hot 100.

Answer the following questions:
1. Did "Umbrella" do well on the Canadian Hot 100?
2. What position did it reach there?
3. Who was it by?
4. Did it feature any guests on the track?
5. Who?
6. What year was it the first number-one song?
7. And the month and day?
8. How many different number-one hits did the Canadian Hot 100 have in October of that year?
9. What was the current number-one song then?
10. Who sang that one?
11. And who'd it feature?
12. Is the Canadian Hot 100 at all similar to Billboard's Hot 100?
13. Where's the Billboard Hot 100 based?
14. How many different types of sales does it combine?
15. Who measures those?
16. How many stations does Canada's airplay chart monitor?
17. What's one of the genres of those stations?
18. What's another?
19. What day of the week are the new charts compiled and released to the public?
20. When was the chart first made available via online services?
A: 1. yes
2. number-one
3. Rihanna
4. yes
5. Jay-Z
6. 2007
7. June 16
8. 117
9. Rockstar
10. Post Malone
11. 21 Savage
12. yes
13. the US
14. Two
15. Nielsen SoundScan
16. 100
17. adult contemporary
18. Top 40 genres
19. Tuesdays
20. 2007
Q: Navassa Island (; ; also "La Navasse") is a small, uninhabited island in the Caribbean Sea. The island is subject to an ongoing territorial dispute and is claimed as an unorganized unincorporated territory of the United States, which administers it through the U.S. Fish and Wildlife Service; and Haiti which claimed sovereignty over Navassa since 1801 through its constitution, as the basis of its objection over the later 1850s' U.S. claim.

Navassa Island is about in area. It is located west of Haiti's southwest peninsula, south of the U.S. naval base at Guantanamo Bay, Cuba, and about one-quarter of the way from mainland Haiti to Jamaica in the Jamaica Channel.

Navassa reaches an elevation of at Dunning Hill south of the lighthouse, Navassa Island Light. This location is from the southwestern coast or east of Lulu Bay.

The terrain of Navassa Island consists mostly of exposed coral and limestone, the island being ringed by vertical white cliffs high, but with enough grassland to support goat herds. The island is covered in a forest of just four tree species: short-leaf fig ("Ficus populnea" var. "brevifolia"), pigeon plum ("Coccoloba diversifolia"), mastic ("Sideroxylon foetidissimum"), and poisonwood ("Metopium brownei").

Navassa Island's topography, ecology, and modern history are similar to that of Mona Island, a small limestone island located in the Mona Passage between Puerto Rico and the Dominican Republic, which were once centers of guano mining, and are nature reserves for the United States. Transient Haitian fishermen and others camp on the island but the island is otherwise uninhabited. It has no ports or harbors, only offshore anchorages, and its only natural resource is guano; economic activity consists of subsistence fishing and commercial trawling activities.

Answer the following questions:
1. Where is Navassa Island?
2. Who owns it?
3. Does anyone live there?
4. What is the terrain like?
5. Does it have a forest?
6. What are the indigenous trees?
7. Is the island similar to any others?
8. Which?
9. Where is that located?
10. Where is the Mona Passage?
A:
1. Caribbean Sea
2. United States and Haiti
3. no
4. mostly coral and limeston
5. Yes
6. short-leaf fig ("Ficus populnea" var. "brevifolia"), pigeon plum ("Coccoloba diversifolia"), mastic ("Sideroxylon foetidissimum"), and poisonwood ("Metopium brownei").
7. Yes
8. Mona
9. the Mona Passage
10. between Puerto Rico and the Dominican Republic