IN: Ficus elastica, the rubber fig, rubber bush, rubber tree, rubber plant, or Indian rubber bush, Indian rubber tree, is a species of plant in the fig genus, native to east India, Nepal, Bhutan, Burma, China (Yunnan), Malaysia, and Indonesia. It has become naturalized in Sri Lanka, the West Indies, and the US State of Florida.
is there such thing as a rubber tree?

OUT: yes

IN: A signature page has a line for the signature of a passport holder. A passport is not valid until it is signed by the passport holder. If a holder is unable to sign his passport, it is to be signed by a person who has legal authority to sign on the holder's behalf.
is a us passport valid if not signed?

OUT: no

IN: Seawater, or salt water, is water from a sea or ocean. On average, seawater in the world's oceans has a salinity of about 3.5% (35 g/L, 599 mM). This means that every kilogram (roughly one litre by volume) of seawater has approximately 35 grams (1.2 oz) of dissolved salts (predominantly sodium (Na ) and chloride (Cl ) ions). Average density at the surface is 1.025 kg/L. Seawater is denser than both fresh water and pure water (density 1.0 kg/L at 4 C (39 F)) because the dissolved salts increase the mass by a larger proportion than the volume. The freezing point of seawater decreases as salt concentration increases. At typical salinity, it freezes at about 2 C (28 F). The coldest seawater ever recorded (in a liquid state) was in 2010, in a stream under an Antarctic glacier, and measured 2.6 C (27.3 F). Seawater pH is typically limited to a range between 7.5 and 8.4. However, there is no universally accepted reference pH-scale for seawater and the difference between measurements based on different reference scales may be up to 0.14 units.
is sea water and salt water the same thing?

OUT: yes

IN: While the agreement remains controversial to this day, it is no longer at the forefront of Canadian politics. It was superseded by the North American Free Trade Agreement (NAFTA) in 1994. The Liberals under Jean Chretien were elected to office in the 1993 election, partly on a promise to renegotiate key labor and environmental parts of NAFTA. An agreement was indeed struck with the Democrats under Bill Clinton that created separate side deals to address both of these concerns.
does canada have free trade with the us?

OUT:
yes