input: OPTIONS:
- when the air heats up
- when the timer runs out
- when the air cools
- when it bursts Now, answer this question: Answer the following question given this paragraph: Weather stations contain many instruments for measuring weather conditions. The weather balloon ( Figure above ) will rise into the atmosphere until it bursts. As it rises, it will gather weather data and send it to the surface. Many weather satellites orbit Earth. They constantly collect and transmit weather data from high above the surface. A radar device sends out radio waves in all directions. The waves bounce off water in the atmosphere and then return to the sender. The radar data shows where precipitation is falling. It's raining in the orange-shaded area shown above. Q: When do weather balloons return to earth? A:
A:
output: when it bursts

Answer the following question given this paragraph: Gap genes control the shape of a developing zygote early in its development. Gap mutants are missing segments in their embryos. These genes are highly regulated. Q: What controls the shape of a developing zygote early in its development? A:

OPTIONS:
- chromosomes
- storage genes
- DNA
- gap genes

Answer: gap genes

Problem: OPTIONS:
- boiling
- vaporizing
- freezing
- melting
Q: Answer the following question given this paragraph: Substances can change phaseoften because of a temperature change. At low temperatures, most substances are solid; as the temperature increases, they become liquid; at higher temperatures still, they become gaseous. The process of a solid becoming a liquid is called melting (an older term that you may see sometimes is fusion). The opposite process, a liquid becoming a solid, is called solidification. For any pure substance, the temperature at which melting occursknown as the melting pointis a characteristic of that substance. It requires energy for a solid to melt into a liquid. Every pure substance has a certain amount of energy it needs to change from a solid to a liquid. This amount is called theenthalpy of fusion (or heat of fusion) of the substance, represented as Hfus. Some Hfus values are listed in Table 10.2 "Enthalpies of Fusion for Various Substances"; it is assumed that these values are for the melting point of the substance. Note that the unit of Hfus is kilojoules per mole, so we need to know the quantity of material to know how much energy is involved. The Hfus is always tabulated as a positive number. However, it can be used for both the melting and the solidification processes as long as you keep in mind that melting is always endothermic (so H will be positive), while solidification is always exothermic (so H will be negative). Table 10.2 Enthalpies of Fusion for Various Substances Substance (Melting Point). Q: What do you call the process of a solid becoming a liquid? A:
Answer: melting

Problem:OPTIONS:
- mechanical wave
- thermal wave
- propagate wave
- electromagnetic wave

Answer the following question given this paragraph: An electromagnetic wave is a wave that consists of vibrating electric and magnetic fields. A familiar example will help you understand the fields that make up an electromagnetic wave. Think about a common bar magnet. It exerts magnetic force in an area surrounding it, called the magnetic field. You can see the magnetic field of a bar magnet in Figure below . Because of this force field, a magnet can exert force on objects without touching them. They just have to be in its magnetic field. An electric field is similar to a magnetic field (see Figure below ). An electric field is an area of electrical force surrounding a charged particle. Like a magnetic field, an electric field can exert force on objects over a distance without actually touching them. Q: A wave that consists of vibrating electric and magnetic fields is called what? A:
****
A: electromagnetic wave

Answer the following question given this paragraph: Types of Biodiversity Scientists generally accept that the term biodiversity describes the number and kinds of species in a location or on the planet. Species can be difficult to define, but most biologists still feel comfortable with the concept and are able to identify and count eukaryotic species in most contexts. Biologists have also identified alternate measures of biodiversity, some of which are important for planning how to preserve biodiversity. Genetic diversity is one of those alternate concepts. Genetic diversity or variation is the raw material for adaptation in a species. A species' future potential for adaptation depends on the genetic diversity held in the genomes of the individuals in populations that make up the species. The same is true for higher taxonomic categories. A genus with very different types of species will have more genetic diversity than a genus with species that look alike and have similar ecologies. If there were a choice between one of these genera of species being preserved, the one with the greatest potential for subsequent. Q: What term describes the number and kinds of species in a location or on the planet? A:
OPTIONS:
- habitat
- Allopatric speciation
- ecosystem
- biodiversity
biodiversity

Answer the following question given this paragraph: Populations usually grow bigger when they have what they need. How fast they grow depends on birth and death rates. They grow more slowly as they get close to the carrying capacity. This is the biggest population the environment can support. Q: When populations get close to the carrying capacity, what happens to growth? A:
OPTIONS:
- halts
- dies
- spikes
- slows

Answer:
slows