*Question*
If amphibians are the first true animals with backbones with four limbs, then amphibians are the first true what with four limbs? Answer choices: - members of their own species - to move people - warm-blooded - Due to their feet - animals with backbones - remains of prehistoric life - Something to move - Generating heat
**Answer**
animals with backbones

*Question*
If mutations change characteristics of living things over time, then what causes changes in characteristics of living things over time? Answer choices: - mutations - science - parents - environment - light energy - news - alleles - animals
**Answer**
mutations

*Question*
If cancer cells are abnormal, then what kind of cells are abnormal? Answer choices: - nuclear - kidney - cell wall - dangerous - white - parasites - negative - cancer
**Answer**
cancer

*Question*
If humans have collected edible mushrooms for thousands of years, then what types of mushrooms have humans collected for thousands of years? Answer choices: - ferns - Hallucinogenic - protected - Dirty - gills - made - Dried - Edible
**Answer**
Edible