Q: Management programs based on population-regulating factors have helped prevent the extinction of many? Choices: - abundant species - keystone species - omnivores - endangered species A:
endangered species

Q: What determines velocity? Choices: - direction - change in direction - mass per unit - distance over time in a given direction A:
distance over time in a given direction

Q: The nitrogen cycle moves nitrogen back and forth between the atmosphere and what? Choices: - Ocean - Ozone Layer - sediments - organisms A:
organisms

Q: A catalyst decreases the amount of what resource that is required in order to begin a chemical reaction? Choices: - positive energy - motion energy - kinetic energy - activation energy A:
activation energy