Answer the following question given this paragraph: The theory of evolution by natural selection was proposed at about the same time by both Charles Darwin and Alfred Russel Wallace, shown in Figure below , and was set out in detail in Darwin's 1859 book On the Origin of Species . Natural selection is a process that causes heritable traits that are helpful for survival and reproduction to become more common, and harmful traits, or traits that are not helpful or advantageous for survival to become more rare in a population of organisms. This occurs because organisms with advantageous traits are more "fit" to survive in a particular environment and have "adapted" to the conditions of that environment. These individuals will have greater reproductive success than organisms less fit for survival in the environment. This will lead to an increase in the number of organisms with the advantageous trait(s) over time. Over many generations, adaptations occur through a combination of successive, small, random changes in traits, and natural selection of those variants best-suited for their environment. Natural selection is one of the cornerstones of modern biology. Q: What is the method of evolution by which advantageous heritable traits become more common over generations? A:

OPTIONS:
- artificial selection
- same selection
- flow selection
- natural selection

Answer: natural selection

Problem: OPTIONS:
- compound mass
- mass effect
- atomic energy
- molecular mass
Q: Answer the following question given this paragraph: Note: Atomic mass is given to three decimal places, if known. Now that we understand that atoms have mass, it is easy to extend the concept to the mass of molecules. The molecular mass is the sum of the masses of the atoms in a molecule. This may seem like a trivial extension of the concept, but it is important to count the number of each type of atom in the molecular formula. Also, although each atom in a molecule is a particular isotope, we use the weighted average, or atomic mass, for each atom in the molecule. For example, if we were to determine the molecular mass of dinitrogen trioxide, N2O3, we would need to add the atomic mass of nitrogen two times with the atomic mass of oxygen three times:. Q: What is the sum of the masses of the atoms in a molecule? A:
Answer: molecular mass

Problem:OPTIONS:
- differential
- network
- worker
- operator

Answer the following question given this paragraph: When lactose is absent, a repressor protein binds to the operator. The operator is located between the promoter and the three lac operon genes. The protein blocks the binding of RNA polymerase to the promoter. As a result, the lac genes are not expressed. Q: When lactose is absent, a repressor protein binds to what? A:
****
A: operator

Answer the following question given this paragraph: Amphibians reproduce sexually. Fertilization may take place inside or outside the body. Amphibians are oviparous. Embryos develop in eggs outside the mother's body. Q: How do amphibians reproduce? A:
OPTIONS:
- asexually
- biologically
- they don't
- sexually
sexually

Answer the following question given this paragraph: Amphibians may attract mates with calls or scents. Q: Amphibians may attract mates with what? A:
OPTIONS:
- only calls
- only scents
- neither
- calls or scents

Answer: calls or scents

input with options: Answer the following question given this paragraph: Primary pollutants enter the air directly. Some are released by natural processes, like ash from volcanoes. Most are released by human activities. Carbon oxides are released when fossil fuels burn. Q: What type of pollutants enter the air directly? A:
OPTIONS:
- secondary
- liquid
- carbon
- primary
output:
primary