Answer the following question given this paragraph: Composite volcanoes are also called stratovolcanoes. This is because they are formed by alternating layers (strata) of magma and ash ( Figure below ). The magma that creates composite volcanoes tends to be thick. The steep sides form because the lava cannot flow too far from the vent. The thick magma may also create explosive eruptions. Ash and pyroclasts erupt into the air. Much of this material falls back down near the vent. This creates the steep sides of stratovolcanoes. Q: What is in danger of happening when thick magma is formed? Choices: - focused eruptions - continuous eruptions - earthquakes - explosive eruptions A:
explosive eruptions
Answer the following question given this paragraph: Proteins are organic compounds made up of amino acids. Q: What kinds of acids are proteins made out of? Choices: - acetic acids - protein acids - sequence acids - amino acids A:
amino acids
Q: Answer the following question given this paragraph: Plants called epiphytes grow on other plants. They obtain moisture from the air and make food by photosynthesis. Most epiphytes are ferns or orchids that live in tropical or temperate rainforests (see Figure below ). Host trees provide support, allowing epiphyte plants to obtain air and sunlight high above the forest floor. Being elevated above the ground lets epiphytes get out of the shadows on the forest floor so they can get enough sunlight for photosynthesis. Being elevated may also reduce the risk of being eaten by herbivores and increase the chance of pollination by wind. Q: What type of plants grow on other plants? Choices: - bryophytes - parasites - legumes - epiphytes A:
A: epiphytes
Question: Answer the following question given this paragraph: Figure 21.14 Vaccinations are designed to boost immunity to a virus to prevent infection. (credit: USACE Europe District). Q: Vaccinations are designed to boost immunity to a virus to prevent this? Choices: - mutation - reproduction - pathogen - infection A:
Answer: infection
*Question*
Answer the following question given this paragraph: Electric generators convert mechanical energy to electric energy. Q: What devices convert mechanical energy to electric energy? Choices: - kinetic generators - transformation generators - mechanical generators - electric generators A:
**Answer**
electric generators
Answer the following question given this paragraph: You can see a model of the cell membrane in Figure below . The molecules that make up the cell membrane are mainly phospholipids. There are two layers of phospholipids. They are arranged so the lipid tails are on the inside of the membrane. They make the interior of the membrane hydrophobic, or "water fearing". The lipid heads point toward the outside of the membrane. The make the outer surfaces of the membrane hydrophilic, or "water loving". Different types of proteins are embedded in the lipid layers. The proteins are needed to help transport many substances across the membrane. Q: What is the main makeup of the cell membrane? Choices: - glucose - antibodies - filaments - phospholipids A:
phospholipids