Q: Answer the following question given this paragraph: The other idea is that evolution occurs by natural selection. Natural selection is the process in which living things with beneficial traits produce more offspring. As a result, their traits increase in the population over time. Q: Under which process do living things with beneficial traits produce more offspring? A:

OPTIONS:
- migration
- differentiation
- evolution
- natural selection

A: natural selection

input: OPTIONS:
- spermatogenesis
- glycolysis
- reverse transferase
- photosynthesis Now, answer this question: Answer the following question given this paragraph: Green cyanobacteria on a lake make food by photosynthesis. Q: Green cyanobacteria on a lake produce food through what process? A:
A:
output: photosynthesis

Answer the following question given this paragraph: Writing a formula for a ternary ionic compound also involves the same steps as for a binary ionic compound. Write the symbol and charge of the cation followed by the symbol and charge of the anion. Use the crisscross method to ensure that the final formula is neutral. Calcium nitrate is composed of a calcium cation and a nitrate anion. Q: What is composed of a calcium cation and a nitrate anion? A:

OPTIONS:
- calcium carbonate
- dynamite
- nitrous oxide
- calcium nitrate

Answer: calcium nitrate

Problem: OPTIONS:
- vertical energy
- mechanical energy
- kinetic energy
- potential energy
Q: Answer the following question given this paragraph: Potential energy is energy that is stored in a person or object. Q: Energy that is stored in a person or object is called? A:
Answer: potential energy

Problem:OPTIONS:
- gel
- tracker
- solution
- tracer

Answer the following question given this paragraph: Learn some applications of radioactivity. Radioactive isotopes have a variety of applications. Generally, however, they are useful because either we can detect their radioactivity or we can use the energy they release. Radioactive isotopes are effective tracers because their radioactivity is easy to detect. A tracer is a substance that can be used to follow the pathway of that substance through some structure. For instance, leaks in underground water pipes can be discovered by running some tritium-containing water through the pipes and then using a Geiger counter to locate any radioactive tritium subsequently present in the ground around the pipes. (Recall that tritium is a radioactive isotope of hydrogen. ) Tracers can also be used to follow the steps of a complex chemical reaction. After incorporating radioactive atoms into reactant molecules, scientists can track where the atoms go by following their radioactivity. One excellent example of this is the use of carbon-14 to determine the steps involved in. Q: What is the name for a substance that can be used to follow the pathway of that substance through some structure? A:
****
A: tracer

Problem:OPTIONS:
- hydrogen
- kinetic
- functional
- catalytic

Answer the following question given this paragraph: Q: Many enzymes require nonprotein helpers for what activity? A:
****
A:
catalytic