*Question*
Q: What species do humans belong to? Choices: - homo erectus - hominids - monkeys - homo sapiens A:
**Answer**
homo sapiens

*Question*
Q: What is the main difference between eukaryotic and prokaryotic cells? Choices: - prokaryotic cells have a nucleus - eukaryotic cells have a flagella - eukaryotic cells have a cell wall - eukaryotic cells have a nucleus A:
**Answer**
eukaryotic cells have a nucleus

*Question*
Q: What is it called when bones get longer and bigger? Choices: - expansion - replication - reproduction - growth A:
**Answer**
growth

*Question*
Q: What is another environmental benefit of conserving resources? Choices: - more jobs - warmer temperatures - lower prices - less trash A:
**Answer**
less trash