Q: The male insects in a population are treated to prevent sperm production. Would this reduce this insect population? OPTIONS:
- No, because the insects would still mate.
- No, because it would not change the offspring mutation rate.
- Yes, because it would sharply decrease the reproduction rate.
- Yes, because the males would die.
A: Yes, because it would sharply decrease the reproduction rate.
During a lab investigation a scientist heats a solid substance. The scientist observes that the solid has two different melting points. The scientist is able to separate the two resulting liquids. Which statement best classifies the original solid substance?
OPTIONS:
- It was an atom.
- It was a mixture.
- It was an element.
- It was a compound.

It was a mixture.
Q: A plant produces tiny plants around the edges of its leaves. When these tiny plants fall to the ground, they take root and become new plants. This process is an example of ---- OPTIONS:
- sexual reproduction
- asexual reproduction
- evolution
- extinction

A: asexual reproduction
Although change in multicellular species usually takes thousands of years, some species of bacteria undergo major changes in just a few years. One reason for this difference is that these bacteria
===
OPTIONS:
- are microscopic
- do not contain DNA
- reproduce very quickly
- cause infectious diseases

reproduce very quickly
Question:
Why would explorers use a compass when traveling to unknown lands?
OPTIONS:
- to locate a direction to travel
- to measure the quality of drinking water
- to protect themselves from wild animals
- to determine levels of humanity in tropical areas
Answer:
to locate a direction to travel
[Q]: How does repeating an experiment improve the likelihood of obtaining accurate results?
===
OPTIONS:
- Data can be compared.
- Time can be decreased.
- Equipment can be added.
- Procedures can be changed.
****
[A]:
Data can be compared.