Answer the following question given this paragraph: Chemists want to be able to predict the outcome of reactions. They would like it to be possible to predict what will happen when reactants are added together under a given set of conditions. The conditions of a reaction might include things like temperature, pressure, and concentrations of various reaction components. If the given conditions favor the formation of products, the reaction is said to be spontaneous . Q: How is a reaction described when the given conditions favor formation of products? A:
OPTIONS:
- instantaneous
- fluctuations
- planned
- spontaneous
spontaneous

Answer the following question given this paragraph: A lake is an example of a freshwater biome. Water in a lake generally forms three different zones based on water depth and distance from shore. Q: A lake is an example of what type of biome? A:
OPTIONS:
- natural biome
- wet biome
- organic biome
- freshwater biome

Answer: freshwater biome

Question: Answer the following question given this paragraph: Whether or not a given isotope is radioactive is a characteristic of that particular isotope. Some isotopes are stable indefinitely, while others are radioactive and decay through a characteristic form of emission. As time passes, less and less of the radioactive isotope will be present, and the level of radioactivity decreases. An interesting and useful aspect of radioactive decay is half-life, which is the amount of time it takes for one-half of a radioactive isotope to decay. The half-life of a specific radioactive isotope is constant; it is unaffected by conditions and is independent of the initial amount of that isotope. Consider the following example. Suppose we have 100.0 g of tritium (a radioactive isotope of hydrogen). It has a half-life of 12.3 y. After 12.3 y, half of the sample will have decayed from hydrogen-3 to helium-3 by emitting a beta particle, so that only 50.0 g of the original tritium remains. After another 12.3 y making a total of 24.6 yanother half of the remaining tritium will have decayed, leaving 25.0 g of tritium. After another 12.3 ynow a total of 36.9 yanother half of the remaining tritium will have decayed, leaving 12.5 g. This sequence of events is illustrated in Figure 15.1 "Radioactive Decay". Figure 15.1 Radioactive Decay. Q: Some isotopes are stable indefinitely, while others are radioactive and do what through a characteristic form of emission? A:
OPTIONS:
- replicate
- bond
- expand
- decay
Answer: decay

input with options: Answer the following question given this paragraph: Nervous systems throughout the animal kingdom vary in structure and complexity, as illustrated by the variety of animals shown in Figure 35.2. Some organisms, like sea sponges, lack a true nervous system. Others, like jellyfish, lack a true brain and instead have a system of separate but connected nerve cells (neurons) called a "nerve net. " Echinoderms such as sea stars have nerve cells that are bundled into fibers called nerves. Flatworms of the phylum Platyhelminthes have both a central nervous system (CNS), made up of a small "brain" and two nerve cords, and a peripheral nervous system (PNS) containing a system of nerves that extend throughout the body. The insect nervous system is more complex but also fairly decentralized. It contains a brain, ventral nerve cord, and ganglia (clusters of connected neurons). These ganglia can control movements and behaviors without input from the brain. Octopi may have the most complicated of invertebrate nervous systemsthey have neurons that are organized in specialized lobes and eyes that are structurally similar to vertebrate species. Q: What do jellyfish lack in their nervous system? A:
OPTIONS:
- stimulus
- Response
- Cortex
- true brain
output: true brain

Q: Answer the following question given this paragraph: Birds may be specialists or generalists in terms of what they eat. Generalists are organisms that eat many different types of food. Birds that are generalists include the red-winged blackbird in Figure below . It has a basic beak that can eat many different foods. Red-winged blackbirds are omnivores. They may eat a wide variety of seeds as well as insects and other small animals such as snails and frogs. Q: What are organisms called, like the red-winged blackbird, that eat many different types of food? A:

OPTIONS:
- omniverous
- specalist
- carniverous
- generalists

A: generalists

Answer the following question given this paragraph: Some prokaryotes form structures consisting of many individual cells, like the cells in Figure below . This is called a biofilm. A biofilm is a colony of prokaryotes that is stuck to a surface. The surface might be a rock or a host's tissues. The sticky plaque that collects on your teeth between brushings is a biofilm. It consists of millions of prokaryotic cells. Q: A biofilm is a colony of prokaryotes that is stuck to what? A:
OPTIONS:
- the middle
- the bottom
- skin
- surface
surface