Q: Answer the following question given this paragraph: Eventually plants evolved. Plants produce oxygen as a product of photosynthesis. Oxygen spread around the planet about 2.5 billion years ago. Many organisms died off because they could not handle the oxygen. But this development was extremely important for other life. Animals need oxygen to breathe. If photosynthesis had not evolved there would be no animals. Q: Because it produces oxygen, what plant process was necessary for the evolution of animals? A:

OPTIONS:
- germination
- death
- reproduction
- photosynthesis

A: photosynthesis

input: OPTIONS:
- igneous
- sedimentary
- basaltic
- metamorphic Now, answer this question: Answer the following question given this paragraph: Metamorphic rocks form as an existing rock is altered by high temperature or pressure. Q: What kind of rocks form as an existing rock is altered by high temperature or pressure? A:
A:
output: metamorphic

Answer the following question given this paragraph: and Z, the atomic number, is the number of protons. The protons and neutrons that make up the nucleus of an atom are callednucleons, and an atom with a particular number of protons and neutrons is called anuclide. Nuclides with the same number of protons but different numbers of neutrons are called isotopes. Isotopes can also be represented by an alternative notation that uses the name of the element followed by the mass number, such as carbon-12. The stable isotopes of oxygen, for example, can be represented in any of the following ways:. Q: What are protons and neutrons that make up the nucleus of an atom called? A:

OPTIONS:
- baryons
- pions
- electron shells
- nucleons

Answer: nucleons

Problem: OPTIONS:
- hemoglobin
- carbon dioxide
- nitrogen
- oxygen
Q: Answer the following question given this paragraph: The veins that return oxygen-poor blood to the heart are the superior vena cava and the inferior vena cava . The pulmonary veins return oxygen-rich blood from the lungs to the heart. The pulmonary veins are the only veins that carry oxygen-rich blood. Q: The superior vena cava and the inferior vena cava are veins that return blood lacking what to the heart? A:
Answer: oxygen

Problem:OPTIONS:
- falls and surgical error
- sports and household accidents
- car crashes and falls
- car crashes and athletic activities

Answer the following question given this paragraph: Brain and spinal cord injuries most commonly occur because of car crashes or athletic activities. Fortunately, many injuries can be prevented by wearing seat belts and safety helmets (see Figure below ). Avoiding unnecessary risks, such as doing stunts on a bike or diving into shallow water, can also reduce the chances of brain and spinal cord injuries. Q: What are the two most common common ways that brain and spinal cord injuries occur? A:
****
A: car crashes and athletic activities

Problem:OPTIONS:
- astrophysics
- geology
- biology
- chemistry

Answer the following question given this paragraph: 1.8 End-of-Chapter Material Chapter Summary To ensure that you understand the material in this chapter, you should review the meanings of the bold terms in the following summary and ask yourself how they relate to the topics in the chapter. Chemistry is the study of matter, which is anything that has mass and takes up space. Chemistry is one branch of science, which is the study of the natural universe. Like all branches of science, chemistry relies on the scientific method, which is a process of Saylor URL: http://www. saylor. org/books. Q: What branch of science is defined as the study of matter? A:
****
A:
chemistry