Input: Answer this question:
The surface of Earth is constantly changing. Which of these findings provides the best evidence that the crustal surface of Earth has changed over time?
OPTIONS:
- Some rock layers are very thick.
- Some species have become extinct.
- Marine fossils are found in mountain areas.
- Igneous rock is found on all tectonic plates.
Answer: Marine fossils are found in mountain areas.

*Question*: Within a substance, atoms that collide frequently and move independently of one another are most likely in a OPTIONS:
- liquid.
- solid.
- gas.
- crystal.
*Answer*: gas.

question:
For a technology project, Kyle came up with an idea to build a model bridge. He wants his bridge to span 50 cm and to support a 1 kg object. According to the engineering design process, which of the following should be Kyle's next step?
OPTIONS:
- construct prototypes of different kinds of bridges
- research the different designs of bridges
- gather the materials needed to build the bridge
- make a drawing to show how to build the bridge

answer:
research the different designs of bridges

[Q]: Which is considered a nonrenewable resource?
===
OPTIONS:
- oil
- soil
- food
- water
****
[A]: oil

question below:
Lemon juice turns litmus paper red, is corrosive and tastes sour. Lemon juice is classified as
OPTIONS:
- an acid.
- a base.
- an element.
- More information is needed to classify lemon juice.
answer below:
an acid.

Ten people became sick with the flu after attending a school dance. What is the scenario that could best explain how the people got sick?
OPTIONS:
- contact with environmental sources
- contact with an infected animal
- contact with a contaminated object
- contact with an infected person
contact with an infected person