Fact 1: Acar engine usually converts gasoline into motion and heat through combustion. Fact 2: Oxygen acts as an aid to combustion. Given the two facts above, answer the question "What acts as an aid to a car engine converting gasoline into motion and heat?" with the following options: - Energy. - oxygen - nitrogen - helium - argon - energy - burning - sugar
oxygen

Fact 1: Plucking a string can cause that string to vibrate. Fact 2: When something makes a noise it is vibrating. Given the two facts above, answer the question "Plucking a string can cause that string to make what?" with the following options: - colors - light - Energy. - a chime - flavors - sound - noise - waves
noise

Q: Fact 1: Vertebrate chordates have a backbone. Fact 2: Chordates Chordates Chordates include fish, amphibians, reptiles, birds, and mammals. Given the two facts above, answer the question "fish, amphibians, reptiles, birds, and mammals have what?" with the following options: - food - fur and fat - backbone - power - four limbs - retina - vision - competition
A: backbone

Question: Fact 1: Decomposition increases amount of organic matter in soil. Fact 2: Organic matter is the byproduct of the decomposition. Given the two facts above, answer the question "what does decomposing increase?" with the following options: - fossils - Motility - prolactin release - oil - organic matter - aerobic capacity - Energy. - water
Answer: organic matter

*Question*
Fact 1: Echinoderms have a unique water vascular system with tube feet. Fact 2: Another group of echinoderms are the echinoids. Given the two facts above, answer the question "What kind of feet do echinoids have?" with the following options: - tube - long - warm - webbed - arched - edible - muscle - flat
**Answer**
tube

(Q).
Fact 1: Carbon monoxide is a gas produced by furnaces and other devices that burn fuel. Fact 2: Fuel is burned inside the engine. Given the two facts above, answer the question "Carbon monoxide, a product of furnaces and engines, is a:" with the following options: - acid - CO2 - kill - harm - gas - form - CO 2 - HPV
(A).
gas