Fact 1: All cells share some of the same structures and basic functions. Fact 2: Biological structures are too complex. Given the two facts above, what do all cells share?
OPTIONS:
- basic function
- Veins and arteries.
- exact structure
- how they look
- energy usage
- Electrical energy
- types of protein
- Chemical energy

Answer: basic function

Fact 1: Bottleneck effect occurs when a population suddenly gets much smaller. Fact 2: Fire usually causes temporary declines in populations. Given the two facts above, what can occur in animals after a fire?
OPTIONS:
- the population rises
- Contaminated wounds
- the population grows rapidly
- the population fights the fire
- recovery time from fatigue
- the bottleneck effect
- Temperature changing
- Dehydration

Answer: the bottleneck effect

Fact 1: If an object is made of a material then that object has the properties of that material. Fact 2: Properties can be used to separate or sort a group of objects or materials. Given the two facts above, what stays the same when an item is made of a material?
OPTIONS:
- properties
- color
- height
- kinetic energy
- size
- cycles
- support
- energy

Answer:
properties