Sinkholes are formed by precipitation, and sinkholes are common in the southwestern portion of the subsection. Given these facts, what is common in the southwestern portion of the subsection among the following options: - permineralization - deuterostomes - barrel-shaped - cactuses - swamp vegetation - peachleaf willow - precipitation - gene flow
precipitation

Blowing air into a whistle causes air to vibrate inside the whistle, and sounds are caused by vibrations in the air. Given these facts, blowing what into a whistle causes sound among the following options: - a lack of noise - CFCs - CO 2 - a lack of sound - wind - air - gas - no noise
air

Q: Biodiversity increases the productivity and stability of ecosystems, and biodiversity is basically genetic diversity. Given these facts, what increases the productivity and stability of ecosystems among the following options: - Fully cooking the oysters - genetic uniformity - genetic diversity - extinction - agriculture - disease - Earth orbiting the Sun - recycling
A: genetic diversity

Question: An animal requires nutrients to grow and heal, and animals acquire nutrients by ingestion. Given these facts, an animal requires ingestion to do what among the following options: - aerobic capacity - die - water conservation - drinking - grow and heal - motility - howl - hear
Answer: grow and heal

*Question*
Sharpening an object causes that object to change shape, and an object is an item in the real world. Given these facts, what does sharpening an item do among the following options: - changes shape - alters smell - changes color - Relieve pain - focusing a lens - maintains shape - duplicate itself - lowered energy cost
**Answer**
changes shape

*Question*
Temperature falls from the equator to the poles, and temperature Temperature is an measurement of the amount of heat. Given these facts, what can be measured from the equator to the poles among the following options: - water - speed - air - Earth - Length - solar - heat - Energy
**Answer**
heat