Fact 1: Seasons cause change to the environment.  Fact 2: An ecosystem is an environment and all the members of that environment.  Given the two facts above, answer the question "What is something that changes an ecosystem?" with the following options:  - seasons  - herbicide  - animals  - Pesticides  - flooding  - wind  - influenza  - climate
seasons
Fact 1: Water vapor condensing in clouds causes rain.  Fact 2: Humidity is the amount of water vapor in the air.  Given the two facts above, answer the question "condensation in the air and humidity are caused by?" with the following options:  - Sun  - kinetic  - heat  - Joules  - climate  - sweat  - boiling  - water
water
Q: Fact 1: Arubber band snapping causes the particles in the rubber band to vibrate.  Fact 2: Heat causes molecules of the material to vibrate.  Given the two facts above, answer the question "A rubber band snapping causes the particles in the rubber band to" with the following options:  - Rise  - Loose  - energy  - heat  - sound  - expand  - waves  - struck
A: heat
Question: Fact 1: Oxygen is just one substance transported by the blood.  Fact 2: Active brains and muscles require more oxygen and nutrients.  Given the two facts above, answer the question "Muscles require substances transported in the body by" with the following options:  - sugar  - food  - fibers  - fat  - neurons  - blood  - glucose  - bones
Answer: blood
*Question*
Fact 1: If the amount of available food and water decreases in an environment then animals may leave that environment to find food and water.  Fact 2: Food and water provided to patients by mouth is the usual means of providing nutrition to patients.  Given the two facts above, answer the question "What do animals do when the available nutrients in an environment decrease?" with the following options:  - basic building blocks of life  - depress neuronal excitability  - they leave to find them  - they plant seeds  - they stay  - Plant growth is reduced  - they live like normal  - body temperature reduces
**Answer**
they leave to find them
Fact 1: Chlorophyll is used for absorbing light energy by plants.  Fact 2: Sun emits light energy.  Given the two facts above, answer the question "What allows plants to absorb energy from the sun?" with the following options:  - Mitochondria  - Chlorophyll  - peachleaf willow  - Vacuoles  - carbon dioxide  - color of leaves  - an electron lens  - Cell walls

Chlorophyll