Answer the following question given this paragraph: Most chemical reactions in organisms take place in an environment that is mostly water. Q: The environment where most chemical reactions in organisms takes place consists mostly of what? Choices: - air - sodium - helium - water A:
water
Answer the following question given this paragraph: Varying Rates of Speciation Scientists around the world study speciation, documenting observations both of living organisms and those found in the fossil record. As their ideas take shape and as research reveals new details about how life evolves, they develop models to help explain rates of speciation. In terms of how quickly speciation occurs, two patterns are currently observed: gradual speciation model and punctuated equilibrium model. In the gradual speciation model, species diverge gradually over time in small steps. In the punctuated equilibrium model, a new species undergoes changes quickly from the parent species, and then remains largely unchanged for long periods of time afterward (Figure 18.23). This early change model is called punctuated equilibrium, because it begins with a punctuated or periodic change and then remains in balance afterward. While punctuated equilibrium suggests a faster tempo, it does not necessarily exclude gradualism. Q: Scientists around the world study speciation, documenting observations both of living organisms and those found in the fossil record. as their ideas take shape and as research reveals new details about how life evolves, they develop models to help explain what? Choices: - spontaneous mutation - creation theory - food chains - rates of speciation A:
rates of speciation
Q: Answer the following question given this paragraph: The topography of a region can be shown on a map. Topographic maps represent geographical features, such as hills and valleys. Topographic maps use contour lines to show geographical features. A contour line is a line of equal elevation. If you walk along a contour line, you will not go uphill or downhill. Topographic maps are also called contour maps. The rules of topographic maps are:. Q: On a topographic map, what is the term for a line of equal elevation? Choices: - latitude line - crater line - aurora line - contour line A:
A: contour line
Question: Answer the following question given this paragraph: Many species have a feeding structure, the radula , found only in mollusks. The radula can be thought of as a "tongue-like" structure. The radula is made mostly of chitin. Types of radulae range from structures used to scrape algae off of rocks to the beaks of squid and octopuses. Q: What is the radula made mostly of? Choices: - casein - chlorophyll - schist - chitin A:
Answer: chitin
*Question*
Answer the following question given this paragraph: After the ball of cells reaches the uterus, it fixes itself to the side of the uterus. This is called implantation . It usually happens about a week after fertilization. Now the implanted ball of cells is ready to continue its development into a baby boy or girl. Q: What is the process of oxidized iron that has been exposed to air and water? Choices: - bark - crust - crystallization - rust A:
**Answer**
rust
*Question*
Answer the following question given this paragraph: Electronic components are the parts used in electronic devices. They are made of p-type and n-type semiconductors. Examples of electronic components include diodes, transistors, and integrated circuits (microchips). Q: What are diodes, transistors, and integrated circuits examples of? Choices: - computer parts - radio parts - machine parts - electronic components A:
**Answer**
electronic components