*Question*
If male dogs use semiochemicals in urine to mark their territory, then male dogs use_ in urine to mark their territory.? Answer choices: - ammonia - Chemical energy - proteins - semiochemicals - animals - heat produced - nitric oxide - They have thick fur
**Answer**
semiochemicals

*Question*
If water vapor cooling can cause clouds to form, then what can form when water vapor cools? Answer choices: - Chimneys - Evaporation - chemicals - streams - Wind - Organic nutrients - Clouds - mildew
**Answer**
Clouds

*Question*
If the immune response produces antibodies, then what does the immune response produce? Answer choices: - antibodies - Allergies - DNA - lymph - massive damage - Energy - Chemical energy - viruses
**Answer**
antibodies

*Question*
If if a car tire is kicked then force is exerted on it, then what has force exerted on it when kicked? Answer choices: - gravity - density - feet - car tire - Sand dollars - volume - vehicles - some mammals
**Answer**
car tire