Answer the following question given this paragraph: The digestive system of birds is unique, with a gizzard that contains swallowed stones for grinding food. Birds do not have teeth. What do you think the stones do? They help them digest their food. Defining characteristics of modern birds also include:. Q: What does the gizzard in birds contain that allows them to grind food? A:
OPTIONS:
- acid
- bile
- teeth
- swallowed stones

Answer: swallowed stones

Question: Answer the following question given this paragraph: Lewis Diagrams Chemists use simple diagrams to show an atom's valence electrons and how they transfer. These diagrams have two advantages over the electron shell diagrams introduced in Chapter 2 "Elements, Atoms, and the Periodic Table". First, they show only valence electrons. Second, instead of having a circle around the chemical symbol to represent the electron shell, they have up to eight dots around the symbol; each dot. Q: Chemists use simple diagrams to show an atom's valence electrons and how they do what? A:
OPTIONS:
- bond
- react
- escape
- transfer
Answer: transfer

input with options: Answer the following question given this paragraph: the distance light can travel in one year, 9.5 trillion kilometers. Q: What travels 9.5 trillion kilometers a year? A:
OPTIONS:
- Sound
- electricity
- air
- light
output: light

Q: Answer the following question given this paragraph: Electric charge is found only in a conductor. Q: Where is the only place an electric charge can be found? A:

OPTIONS:
- translator
- ion
- neuron
- conductor

A: conductor

input: OPTIONS:
- primary succession
- typical succession
- cause succession
- secondary succession Now, answer this question: Answer the following question given this paragraph: Secondary succession A classic example of secondary succession occurs in oak and hickory forests cleared by wildfire (Figure 19.27). Wildfires will burn most vegetation, and unless the animals can flee the area, they are killed. Their nutrients, however, are returned to the ground in the form of ash. Thus, although the community has been dramatically altered, there is a soil ecosystem present that provides a foundation for rapid recolonization. Before the fire, the vegetation was dominated by tall trees with access to the major plant energy resource: sunlight. Their height gave them access to sunlight while also shading the ground and other low-lying species. After the fire, though, these trees are no longer dominant. Thus, the first plants to grow back are usually annual plants followed within a few years by quickly growing and spreading grasses and other pioneer species. Due, at least in part, to changes in the environment brought on by the growth of grasses and forbs, over many years, shrubs emerge along with small pine, oak, and hickory trees. These organisms are called intermediate species. Eventually, over 150 years, the forest will reach its equilibrium point and resemble the community before the fire. This equilibrium state is referred to as the climax community, which will remain until the next disturbance. The climax community is typically characteristic of a given climate and geology. Although the community in equilibrium looks the same once it is attained, the equilibrium is a dynamic one with constant changes in abundance and sometimes species identities. The return of a natural ecosystem after agricultural activities is also a well-documented secondary succession process. Q: A wildfire clears a forest of vegetation and animal life, returning their nutrients to the ground leaving a foundation for rapid recolonization. what is this a classic example of? A:
A:
output: secondary succession

Question: Answer the following question given this paragraph: The process of producing eggs in the ovary is called oogenesis. Eggs, like sperm, are haploid cells, and their production occurs in several steps that involve different types of cells, as shown in Figure below . You can follow the process of oogenesis in the figure as you read about it below. Q: What is the process of producing eggs in the ovary is called? A:
OPTIONS:
- gametogenesis
- meiosis
- morphogenesis
- oogenesis
Answer:
oogenesis