Fact 1: Microorganisms can cause infections. Fact 2: Moisture is required for the microorganisms to grow. Given the two facts above, answer the question "_ can cause infections to grow." with the following options: - Pesticides - bacteria - influenza - nitric oxide - disease - carbon dioxide - moisture - oxygen
moisture

Fact 1: Arubber band snapping causes the particles in the rubber band to vibrate. Fact 2: After all, rubber bands tend to snap when stretched too thin. Given the two facts above, answer the question "When stretched too thin what kind of bands will vibrate?" with the following options: - an object - coiled - mechanical - elastic - nerves - arteries - waves - small
elastic

Q: Fact 1: Vertebrates are all chordates that have a backbone. Fact 2: All chordates have jaws. Given the two facts above, answer the question "What do all vertebrates have?" with the following options: - fur and fat - sensory neurons - Veins and arteries. - four limbs - jaws and scales - a slimy coat - jaw and a backbone - feathers
A: jaw and a backbone

Question: Fact 1: Population density is the average number of individuals per unit of area or volume. Fact 2: Population densities affect the balance of the environment. Given the two facts above, answer the question "The average number of individuals per unit of area affect the balance of ." with the following options: - gravity - the environment - energy - Earth orbiting the Sun - an organism's body - objects that have mass - competition - power
Answer: the environment

*Question*
Fact 1: Erosion causes a river to become deeper and wider. Fact 2: Water erosion has similar consequences as wind erosion. Given the two facts above, answer the question "What can make a river deepen and widen?" with the following options: - birds - sunlight - Sediment - wind and water - rainfall - flooding - weeds - arteries
**Answer**
wind and water

Q: Fact 1: Water vapor condensing in clouds causes rain. Fact 2: Condensing is a gas turning into a liquid. Given the two facts above, answer the question "Water vapor turning from a gas into a liquid causes what?" with the following options: - sweat - storms - Drought - heat - cracks - Hail - Rain - Snow
A: Rain