Q: Answer the following question given this paragraph: Q: Branching food chains and complex trophic interactions form what? Choices: - food fields - food maps - food trees - food webs A:
A: food webs

Q: Answer the following question given this paragraph: Not every neutron produced by fission induces fission. Some neutrons escape the fissionable material, while others interact with a nucleus without making it fission. We can enhance the number of fissions produced by neutrons by having a large amount of fissionable material. The minimum amount necessary for self-sustained fission of a given nuclide is called its critical mass. Q: The minimum amount necessary for self-sustained fission of a given nuclide is called what? Choices: - its half-life - its molar mass - its activation energy - its critical mass A:
A: its critical mass

Q: Answer the following question given this paragraph: Schrodinger's work on orbitals is the basis of the modern model of the atom, which scientists call the quantum mechanical model. The modern model is also commonly called the electron cloud model. That's because each orbital around the nucleus of the atom resembles a fuzzy cloud around the nucleus, like the ones shown in the Figure below for a helium atom. The densest area of the cloud is where the electrons have the greatest chances of being. Q: The modern model of the atom, which scientists call the quantum mechanical model, is based on what scientist's work on orbitals? Choices: - Sagan - Bohr - Newton - schrodinger A:
A: schrodinger

Q: Answer the following question given this paragraph: Scanning acoustic microscopes use sound waves to scan a specimen. These microscopes are useful in biology and medical research. Q: Scanning acoustic microscopes use what kind of waves to scan a specimen? Choices: - radio waves - heat waves - gamma waves - sound waves A:
A: sound waves