*Question*
Q: What two activities are especially important when a number of local populations are linked, forming a metapopulation? Choices: - family reunions and emigration - flow and emigration - immigration and family reunions - immigration and emigration A:
**Answer**
immigration and emigration

*Question*
Q: The bending of a wave around the edges of an opening or an obstacle is called this? Choices: - reflection - sputtering - absorption - diffraction A:
**Answer**
diffraction

*Question*
Q: What system plays a critical role in the regulation of vascular homeostasis? Choices: - endocrine system - circulatory system - renal system - nervous system A:
**Answer**
nervous system

*Question*
Q: Wavelengths are described by a unit of what? Choices: - weight - direction - speed - distance A:
**Answer**
distance