Q: The number of waves that pass a fixed point in a given amount of time is called what? Choices: - wavelength of a wave - spectroscopy of a wave - spread of a wave - frequency of a wave A:
frequency of a wave

Q: What is a process that changes some chemical substances into other chemical substances? Choices: - a bio reaction - spontaneous mutation - cellular respiration - a chemical reaction A:
a chemical reaction

Q: Q: What ancestors did caecillians evolve from? Choices: - ornithopod - arthropod - hominid - tetrapod A:
A: tetrapod

Question: Q: What type of interspecies relationship involves one party being actively harmed? Choices: - mosaicism - symbiosis - mutualism - parasitism A:
Answer: parasitism

*Question*
Q: What weather phenomenon increases the rate of weathering in rock and soil? Choices: - temperature - earthquake - landslide - rainfall A:
**Answer**
rainfall

(Question)
Q: The process by which an organism develops from a single-celled zygote to a multi-cellular organism is complex and well regulated. the regulation occurs through signaling between cells and tissues and responses in the form of what? Choices: - phenotype exchange - spontaneous mutation - dna replication - differential gene expression A:
(Answer)
differential gene expression