What conditions make for a violent volcanic eruption? A. Magma with low viscosity
B. Magma with high silica content
C. Magma with low gas content
D. Magma that can flow easily

The image below shows a common blood pressure gauge. what does this device do? a. measures the level of oxygen present in the blood b. measures the pressure of blood when the lungs expand and compress c. measures the electrical activity of the heart d. measures the pressure of blood when the heart contracts and relaxes

Give an example of a trait that is controlled by more than one gene.

Explain what a zygote is. use the terms egg cell, sperm cell, and fertilization in your explanation.