Fact 1: Melting means changing from a solid into a liquid by adding heat energy. Fact 2: Ice Sculptures melt away. Given the two facts above, answer the question "What causes ice sculptures to turn to liquid? " with the following options: - UV rays - Snow - salt and water. - Heat energy - air cools - kinetic energy - Subzero temperatures - Water expanding
Heat energy

Fact 1: Plasma is formed by electrons separating from atoms in stars. Fact 2: Gas Ionization Losing electrons ionizes the atoms in a gas. Given the two facts above, answer the question "You cannot have matter in a plasma state without what?" with the following options: - energy - Energy. - voltage - ionization - nutrients - light - heat energy - kinetic energy
ionization

Q: Fact 1: Flowing water can slowly dissolve carbon in sedimentary rock. Fact 2: Water falls from the sky and flows downhill due to the force of gravity. Given the two facts above, answer the question "What moving downhill due to the force of gravity can dissolve carbon in sedimentary rock?" with the following options: - river - Raft - pebbles - rain - water - sand - oxygen - craters
A: water

Question: Fact 1: Being burried under soil and mud changes vegetation into peat through extreme heat and pressure in a swamp over a long period of time. Fact 2: Often, the soil consists of mats of very acidic, semi-decayed vegetation, such as peat. Given the two facts above, answer the question "Decayed vegetation turns to what over a period of time?" with the following options: - growth - death - peat - vines - water - coal - flora - potash
Answer: peat

*Question*
Fact 1: Antibodies are large, Y-shaped proteins that recognize and bind to antigens. Fact 2: ALL immunogens are antigens. Given the two facts above, answer the question "Antibodies are large, Y-shaped proteins that recognize and bind to" with the following options: - humans - positive - immunogens - animals - A Greek letter - protect them - Allergies - the skin
**Answer**
immunogens

*Question*
Fact 1: Mollusks are a major food source for other organisms, including humans. Fact 2: Mollusks filter the water as they look for food. Given the two facts above, answer the question "Members of a major food source for humans filter what?" with the following options: - gills - salmon - matter - water - Air - energy - sodium - Energy.
**Answer**
water