Which of the following is the best reason that scientific models are used? a. they prove scientific theories b. they visualize things that are very complex, very large, or very small c. they provided a concrete view of something abstract d. they precisely mimic something in nature

What is the starting point in replication called

In general, characteristics that an organism survive and reproduce become more common in a population over time. what mechanism of evolution cause this change?

Dr. arenas is a scientist who has been trying to determine if increasing pressure will increase the sound that occurs when two chemicals explode. it measures the volume of the sound that occurs at the minimum pressure at which the explosion will occur. it then increases the pressure and measures the volume of the explosions that occur. what kind of investigation is the scientist conducting?