*Question*
If ethologists study monkeys, then what do ethologists study? Answer choices: - plant life - monkeys - geography - Movement - h2o - humans - weather - parasites
**Answer**
monkeys

*Question*
If animals require hydrogen and oxygen for survival, then which are required for animal survival? Answer choices: - hydrogen and oxygen - Chemical energy - oxygen and methane - critical organs - sense organs - hydrogen and helium - light and dark - Organic compounds
**Answer**
hydrogen and oxygen

*Question*
If graduated cylinder measure in liters, then what unit do graduated cylinders use? Answer choices: - engines - meters - power - liters - inches - two - cellulose - pounds
**Answer**
liters

*Question*
If frogs have sense organs to smell and taste chemicals, then have sense organs to smell and taste chemicals? Answer choices: - goats - humans - Birds - worms - frogs - fish - nose - slugs
**Answer**
frogs