*Question*
If sex hormones carry signals that control sexual development and reproduction, then _carry signals that control sexual development and reproduction? Answer choices: - sex hormones - electricity - nucleic acid - Most plants - animals - genes - dendrites - photons
**Answer**
sex hormones

*Question*
If alveoli are used for breathing air by land animals, then what are used for breathing air by land animals? Answer choices: - Frogs - pigeons - gills - alveoli - fish - ferns - four limbs - water
**Answer**
alveoli

*Question*
If climate looks at long-term averages in an area over a long period of time, then what looks at long-term averages in an area over a long period of time? Answer choices: - habitat - Winter - mild - weather - seasons - three - climate - atmosphere
**Answer**
climate

*Question*
If atumor can be burned away when an electrical circuit is working properly, then when the electrical circuit is working properly, what can happen? Answer choices: - dogs can run - heat production - enormous damage to homes - a tumor can be burned away - massive damage - sperm and egg fuse - baskets can be hand-woven - bacteria can thrive
**Answer**
a tumor can be burned away