Input: Answer this question:
Spirogyra are green algae that can reproduce sexually. Which of the following features identifies reproduction in Spirogyra as sexual reproduction?
OPTIONS:
- The cells of parent algae have nuclei.
- Each offspring contains chloroplasts.
- Several offspring may be produced at once.
- Genetic material is contributed by two parent cells.
Answer: Genetic material is contributed by two parent cells.
*Question*: Which of the following statements best explains why earthquakes occur more frequently in California than in Massachusetts? OPTIONS:
- The rock found in California is igneous, but the rock found in Massachusetts is sedimentary.
- California is located on the boundary of two crustal plates, but Massachusetts is not.
- The rock under California is soft, but the rock under Massachusetts is hard.
- California is located on a continental plate, but Massachusetts is not.
*Answer*: California is located on the boundary of two crustal plates, but Massachusetts is not.
question:
Which of the following changes occurs as a solid is heated?
OPTIONS:
- The kinetic energy of the solid decreases.
- The average density of the solid increases.
- The specific heat capacity of the solid decreases.
- The average molecular speed in the solid increases.

answer:
The average molecular speed in the solid increases.
[Q]: Which statement best describes the energy transformations that occur when a candle burns?
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OPTIONS:
- Heat energy from the wax is converted into chemical and light energy.
- Heat energy from the air is converted into mechanical and light energy.
- Chemical energy from the wax is converted into light and heat energy.
- Chemical energy from the air is converted into mechanical and light energy.
****
[A]: Chemical energy from the wax is converted into light and heat energy.
question below:
The pull of gravity on Earth is a direct result of the
OPTIONS:
- mass of Earth.
- magnetic field of Earth.
- rotation of Earth on its axis.
- weight of Earth's atmosphere.
answer below:
mass of Earth.
Input: Answer this question:
A geologist found fossils of horse bones in different rock layers of a canyon. The fossils in the lower levels show shorter bones than those in the upper-level fossils. Which conclusion is based on the geologist's observations?
OPTIONS:
- Horse's reproduce using two parents.
- Horse's became larger over time.
- Smaller Horse's went extinct, and then larger Horse's formed.
- Smaller Horse's are better suited to the environment than larger Horse's.
Answer:
Horse's became larger over time.