*Question*
Fact 1: Amphibians have sense organs to smell and taste chemicals. Fact 2: Frogs, toads and salamanders are amphibians. Given the two facts above, answer the question "What can frogs, toads and salamanders use to smell and taste chemicals?" with the following options: - sense organs - Chemical energy - matter vibrating - larynx - Organic compounds - ocular organs - gills - harmful substances
**Answer**
sense organs

*Question*
Fact 1: Acar engine usually converts gasoline into motion and heat through combustion. Fact 2: Internal combustion engines create friction. Given the two facts above, answer the question "Car engines convert gasoline into what?" with the following options: - light - Energy. - heat - fuel - color - electricity - friction - sound
**Answer**
friction

*Question*
Fact 1: Testosterone stimulates the reproductive organs to develop into male organs. Fact 2: Androgens are male hormones, like testosterone. Given the two facts above, answer the question "What stimulates the reproductive system to form male organs in growth?" with the following options: - Chemical energy - barnacles - Electrical energy - a doorbell - sensory neurons - peachleaf willow - Veins and arteries. - male hormones
**Answer**
male hormones

*Question*
Fact 1: Darkness has a negative impact on photosynthesis. Fact 2: All plants live and grow by photosynthesis. Given the two facts above, answer the question "What has a negative impact on plant growth?" with the following options: - disease - Pollution - nutrients - care - competition - darkness - light - Pesticides
**Answer**
darkness