Fact 1: TRH stimulates the pituitary gland to produce thyroid-stimulating hormone, or TSH. Fact 2: TRH synthesis is regulated directly by thyroid hormones. Given the two facts above, answer the question "What is TSH regulated by?" with the following options: - pituitary - sweating - animals - glucose - heat or cold - heat produced - temperature - organ
pituitary

Fact 1: Introns are regions that do not code for proteins. Fact 2: An area is a rectangular region of cells. Given the two facts above, answer the question "Introns are areas that" with the following options: - it keeps an organism warm - Plant reproduction - the wearing away of rock - do not code for protein - Something coming from a gland - Plant growth is reduced - allow growth - produce offspring
do not code for protein

Q: Fact 1: Erosion causes a river to become deeper and wider. Fact 2: Canyon formed as a consequence of river erosion. Given the two facts above, answer the question " rivers cut deeper and wider to form what" with the following options: - canyons - arteries - Roads - timberlands - old growth forests - soils - Sediment - coral reefs
A: canyons

Question: Fact 1: Plucking a string can cause that string to vibrate. Fact 2: For example, sound is a wave of vibrating air. Given the two facts above, answer the question "What results from plucking a string?" with the following options: - light waves - sound waves - guitar - friction - chemical changes - kinetic energy - mechanical - violinist
Answer: sound waves

*Question*
Fact 1: High pressure systems cause clear weather. Fact 2: High pressure means falling air, which is a condition minimizing cloud formation. Given the two facts above, answer the question "what does low pressure weather cause?" with the following options: - Pollution - flooding - friction - clear air - contamination - Dehydration - rainfall - relocation
**Answer**
clear air

Q: Fact 1: Hydropower requires damming a river. Fact 2: Hoover Dam, the first dam on the Colorado River below Grand Canyon, was built between 1931 and 1935. Given the two facts above, answer the question "Which of these produces hydropower?" with the following options: - deuterostomes - Wind Turbines - power stations - Suez Canal - trout - Old Faithful Geyser - Hoover Dam - stations
A: Hoover Dam