Answer the following question given this paragraph: Nuclear Fission Many heavier elements with smaller binding energies per nucleon can decompose into more stable elements that have intermediate mass numbers and larger binding energies per nucleonthat is, mass numbers and binding energies per nucleon that are closer to the "peak" of the binding energy graph near 56 (see Figure 21.3). Sometimes neutrons are also produced. This decomposition is called fission, the breaking of a large nucleus into smaller pieces. The breaking is rather random with the formation of a large number of different products. Fission usually does not occur naturally, but is induced by bombardment with neutrons. The first reported nuclear fission occurred in 1939 when three German scientists, Lise Meitner, Otto Hahn, and Fritz Strassman, bombarded uranium-235 atoms with slow-moving neutrons that split the U-238 nuclei into smaller fragments that consisted of several neutrons and elements near the middle of the periodic table. Since then, fission has been observed in many other isotopes, including most actinide isotopes that have an odd number of neutrons. A typical nuclear fission reaction is shown in Figure 21.14. Q: The first reported nuclear fission occurred in 1939 when three german scientists bombarded uranium-235 atoms with slow-moving what? A:

OPTIONS:
- protons
- electrons
- isotopes
- neutrons

Answer: neutrons

Problem: OPTIONS:
- rivers
- ocean
- moon
- sun
Q: Answer the following question given this paragraph: The Sun is Earth's main source of energy. The Sun gives us both light and heat. The Sun changes hydrogen into helium through nuclear fusion. This releases huge amounts of energy. The energy travels to Earth mostly as visible light. The energy is carried through the empty space by radiation . We can use sunlight as an energy resource, called solar energy. Q: What celestial body is the earth's main source of energy? A:
Answer: sun

Problem:OPTIONS:
- conceptual tree
- superficial tree
- photogenetic tree
- phylogenetic tree

Answer the following question given this paragraph: Phylogenetic Trees Scientists use a tool called a phylogenetic tree to show the evolutionary pathways and connections among organisms. A phylogenetic tree is a diagram used to reflect evolutionary relationships among organisms or groups of organisms. Scientists consider phylogenetic trees to be a hypothesis of the evolutionary past since one cannot go back to confirm the proposed relationships. In other words, a "tree of life" can be constructed to illustrate when different organisms evolved and to show the relationships among different organisms (Figure 20.2). Unlike a taxonomic classification diagram, a phylogenetic tree can be read like a map of evolutionary history. Many phylogenetic trees have a single lineage at the base representing a common ancestor. Scientists call such trees rooted, which means there is a single ancestral lineage (typically drawn from the bottom or left) to which all organisms represented in the diagram relate. Notice in the rooted phylogenetic tree that the three domains Bacteria, Archaea, and Eukaryadiverge from a single point and branch off. The small branch that plants and animals (including humans) occupy in this diagram shows how recent and miniscule these groups are compared with other organisms. Unrooted trees don't show a common ancestor but do show relationships among species. Q: What tool do scientist's use to show the evolutionary pathways and connections among organisms? A:
****
A: phylogenetic tree

Answer the following question given this paragraph: Increasing the temperature increases the average kinetic energy of the N2molecules. Q: Increasing the temperature of n2 molecules increases what energy of motion? A:
OPTIONS:
- compression energy
- residual energy
- emotional energy
- kinetic energy
kinetic energy

Answer the following question given this paragraph: Some people think bones are like chalk: dead, dry, and brittle. In reality, bones are very much alive. They consist of living tissues and are supplied with blood and nerves. Q: Rather than being dead, dry, and brittle, what support structures of the human body consist of living tissues and are supplied with blood and nerves? A:
OPTIONS:
- lungs
- feet
- hearts
- bones

Answer: bones

input with options: Answer the following question given this paragraph: An ecosystem includes the living organisms (all the populations) in an area and the non-living aspects of the environment ( Figure below ). An ecosystem is made of the biotic and abiotic factors in an area. Q: What includes the living organisms in an area and the non-living aspects of the environment? A:
OPTIONS:
- outpost
- habitat
- degradation
- ecosystem
output:
ecosystem