input: OPTIONS:
- molecular weathering
- chemical reaction
- radiation
- mechanical weathering Now, answer this question: Answer the following question given this paragraph: The weathering of rocks and minerals can be mechanical or chemical. Mechanical weathering changes the size of a mineral or rock. Mechanical weathering does not change the chemical composition of that material. Chemical weathering changes the composition of a mineral or rock. Different types of weathering can alter the same material. Soil forms on top of rock. The type of soil that forms depends on the environment of the region. For example, warm and wet climates form different soils than cold and dry climates. A profile through the soil shows different horizons. Topsoil is the most important layer for crops. Water, ice, wind, and gravity create or modify landforms on Earth's surface. These agents can erode or deposit features that indicate their presence. Erosion by water and ice lowered and rounded the Appalachians. These old mountains no longer look like the Himalaya. Someday the Himalaya may look like the Appalachians do now. Q: What kind of weathering changes the size of a mineral or rock but does not change its chemical composition? A:
A:
output: mechanical weathering

Answer the following question given this paragraph: Elongation is the addition of nucleotides to the mRNA strand. RNA polymerase reads the unwound DNA strand and builds the mRNA molecule, using complementary base pairs. There is a brief time during this process when the newly formed RNA is bound to the unwound DNA. During this process, an adenine (A) in the DNA binds to an uracil (U) in the RNA. Q: What is the addition of nucleotides to the mrna strand? A:

OPTIONS:
- insertion
- elevation
- axons
- elongation

Answer: elongation

Problem: OPTIONS:
- oxygen
- carbon monoxide
- hydrogen
- carbon dioxide
Q: Answer the following question given this paragraph: Q: When animals get rid of their gaseous waste, what is exhaled through their mouth and nose? A:
Answer: carbon dioxide

Problem:OPTIONS:
- meters
- pounds
- teraflops
- newtons

Answer the following question given this paragraph: In the equation for pressure, force is expressed in newtons (N) and area is expressed in square meters (m 2 ). Therefore, pressure is expressed in N/m 2 , which is the SI unit for pressure. This unit is also called the pascal (Pa) . It is named for the scientist Blaise Pascal, whose discovery about pressure in fluids is described later in this lesson. Pressure may also be expressed in the kilopascal (kPa), which equals 1000 pascals. For example, the correct air pressure inside a mountain bike tire is usually about 200 kPa. Q: In the equation for pressure, how is force expressed? A:
****
A: newtons

Answer the following question given this paragraph: Figure 10.4 Double-stranded DNA wraps around histone proteins to form nucleosomes that have the appearance of "beads on a string. " The nucleosomes are coiled into a 30-nm chromatin fiber. When a cell undergoes mitosis, the chromosomes condense even further. Q: Double strands of what wrap around histone proteins to form nucleosomes, which are coiled into a chromatin fiber? A:
OPTIONS:
- bacteria
- ribosomes
- chromatids
- dna
dna

Answer the following question given this paragraph: Many metals react with acids to produce hydrogen gas. A certain reaction produces 86.5 L of hydrogen gas at STP. How many moles of hydrogen were produced?. Q: Many metals react with acids to produce what gas? A:
OPTIONS:
- neon
- mercury
- helium
- hydrogen

Answer:
hydrogen