Problem: OPTIONS:
- oxygen
- base
- carbon
- acid
Q: Answer the following question given this paragraph: Acids change the color of certain acid-base indicators. Two common indicators are litmus and phenolphthalein. Blue litmus turns red in the presence of an acid, while phenolphthalein turns colorless. Q: What causes blue litmus to turn red? A:
Answer: acid

Problem:OPTIONS:
- nuclides
- nutrients
- antibiotics
- steroids

Answer the following question given this paragraph: Steroids (or sterols) have several functions. Sterols are a subgroup of steroids. The sterol cholesterol is an important part of cell membranes and plays other vital roles in the body. Cholesterol is a precursor to fat-soluble vitamins and steroid hormones. Steroid hormones include the male and female sex hormones. Sterols also have roles as second messengers in signalling pathways. Q: Sterols are a subgroup of what? A:
****
A: steroids

Answer the following question given this paragraph: During adolescence, estrogen causes the changes of puberty. It causes the reproductive organs to mature. It also causes other female traits to develop. For example, it causes the breasts to grow and the hips to widen. Q: What causes the changes of puberty? A:
OPTIONS:
- glucose
- insulin
- testosterone
- estrogen
estrogen

Answer the following question given this paragraph: Another mechanism besides diffusion to passively transport materials between compartments is filtration. Unlike diffusion of a substance from where it is more concentrated to less concentrated, filtration uses a hydrostatic pressure gradient that pushes the fluidand the solutes within itfrom a higher pressure area to a lower pressure area. Filtration is an extremely important process in the body. For example, the circulatory system uses filtration to move plasma and substances across the. Q: What is used during filtration to push fluids and solutes, from higher pressure areas to lower pressure areas? A:
OPTIONS:
- constructs pressure gradient
- limited pressure gradient
- magnesium pressure gradient
- hydrostatic pressure gradient

Answer: hydrostatic pressure gradient

Question: Answer the following question given this paragraph: A natural resource is anything in nature that humans need. Metals and fossil fuels are natural resources. But so are water, sunlight, soil, and wind. Even living things are natural resources. Q: Metals, fossil fuels, and water are all examples of what type of resource? A:
OPTIONS:
- ores
- recyclables
- renewable resources
- natural resources
Answer: natural resources

input: OPTIONS:
- meteor shower
- Coriolis effect
- aurora nervosa
- northern lights Now, answer this question: Answer the following question given this paragraph: Particles from the Sun energize ions in the thermosphere. This creates the northern and southern lights. Q: What colorful phenomenon occurs in the northern sky when particles from the sun energize ions in the thermosphere? A:
A:
output:
northern lights