Answer the following question given this paragraph: Some materials are natural permanent magnets. The most magnetic material in nature is the mineral magnetite. Q: The most magnetic material in nature is what? Choices: - crystals - molecules - gold - magnetite A:
magnetite
Answer the following question given this paragraph: Abrasion is another type of mechanical weathering. With abrasion, one rock bumps against another rock. Gravity causes abrasion as a rock tumbles down a slope. Moving water causes abrasion it moves rocks so that they bump against one another ( Figure below ). Strong winds cause abrasion by blasting sand against rock surfaces. Finally, the ice in glaciers cause abrasion. Pieces of rock embedded in ice at the bottom of a glacier scrape against the rock below. If you have ever collected beach glass or pebbles from a stream, you have witnessed the work of abrasion. Q: What kind of weathering is abrasion? Choices: - molecular - electromagnetic - natural - mechanical A:
mechanical
Q: Answer the following question given this paragraph: Certain indicator compounds, such as litmus, can be used to detect acids. Acids turn blue litmus paper red. Q: Acids turn blue litmus paper which color? Choices: - grey - white - purple - red A:
A: red
Question: Answer the following question given this paragraph: 3.3 The Nucleus and DNA Replication The nucleus is the command center of the cell, containing the genetic instructions for all of the materials a cell will make (and thus all of its functions it can perform). The nucleus is encased within a membrane of two interconnected lipid bilayers, side-by-side. This nuclear envelope is studded with protein-lined pores that allow materials to be trafficked into and out of. Q: What is the name of the command center of the cell? Choices: - mitochondria - molecules - vacuole - nucleus A:
Answer: nucleus
*Question*
Answer the following question given this paragraph: Q: What organism is an important pioneer on cleared rock and soil surfaces, such as volcanic flows and burned forests? Choices: - cysts - algae - pigment - lichen A:
**Answer**
lichen
(Question)
Answer the following question given this paragraph: Rust is a combination of several different oxides of iron. The equations below show the steps involved in one of the many processes of rust formation. Q: Rust consists of oxides of what element? Choices: - Copper - Gold - Aluminum - iron A:
(Answer)
iron