*Question*
Q: How many atoms are evenly organized around a central atom? Choices: - four - five - seven - six A:
**Answer**
six

*Question*
Q: What are the four stages of food processing? Choices: - ingestion, digestion, elimination and extinction - ingestion, digestion, absorption, and reproduction - ingestion, reproduction, absorption, and elimination - ingestion, digestion, absorption, and elimination A:
**Answer**
ingestion, digestion, absorption, and elimination

*Question*
Q: In which supergroup are red algae and green algae included? Choices: - xerophyte - spirogyra - troglodyte - archaeplastida A:
**Answer**
archaeplastida

*Question*
Q: Net production efficiency allows ecologists to quantify how efficiently organisms of a particular what incorporate the energy they receive into biomass? Choices: - hypothesized level - neural level - sea level - trophic level A:
**Answer**
trophic level