Input: Answer this question:
A reflex can protect the body from harm. Which organ systems work together to produce a reflex?
OPTIONS:
- nervous and immune systems
- nervous and muscular systems
- circulatory and immune systems
- circulatory and muscular systems
Answer: nervous and muscular systems

*Question*: Many scientists theorize that global warming will melt the polar ice caps. What would most likely happen if the polar ice caps melted? OPTIONS:
- Ocean levels would increase.
- Human population would increase.
- Vegetation in water would decrease.
- Global precipitation would decrease.
*Answer*: Ocean levels would increase.

question:
Many processes on Earth occur at or near tectonic plate boundaries. Which geological events are most common along tectonic plate boundaries?
OPTIONS:
- erosion and deposition
- hurricanes and tornadoes
- earthquakes and volcanoes
- tidal waves and sedimentation

answer:
earthquakes and volcanoes

[Q]: Naturally occurring variations within a species are mainly the result of mutations and
===
OPTIONS:
- sexual reproduction
- dynamic equilibrium
- metabolism
- camouflage
****
[A]: sexual reproduction

question below:
Rocks that contain fragments of bones, shells, and plant remains are most likely
OPTIONS:
- crystals.
- igneous.
- sedimentary.
- metamorphic.
answer below:
sedimentary.

question below:
Which of the following would most likely happen if grasses and shrubs were removed from a rural Massachusetts ecosystem?
OPTIONS:
- There would be an increase in consumers in the ecosystem.
- There would be an increase of photosynthesis in the ecosystem.
- There would be a decrease in food energy produced by the ecosystem.
- There would be a decrease of carbon dioxide available to the ecosystem.
answer below:
There would be a decrease in food energy produced by the ecosystem.