*Question*
Q: Phylum chordata consists of two subphyla of invertebrates, as well as the hagfishes and what else?    Choices:  - lipids  - organs  - cells  - vertebrates  A:
**Answer**
vertebrates

*Question*
Q: What type of science is the study of matter and energy and includes chemistry and physics?    Choices:  - biology  - Earth science  - genetics  - physical science  A:
**Answer**
physical science

*Question*
Q: Which part of an earthquake is in the ground where the ground breaks?    Choices:  - the epicenter  - the tectonic plate  - the fault  - the focus  A:
**Answer**
the focus

*Question*
Q: What is the process in which organ systems work to maintain a stable internal environment?    Choices:  - ketosis  - homogeneity  - organ balance  - homeostasis  A:
**Answer**

homeostasis