Answer the following question given this paragraph: User:Grm_wnr/Wikimedia Commons, modified by CK-12 Foundation. The central nervous system is composed of the brain and the spinal cord . Public Domain. Q: The central nervous system is composed of the brain and what else? A:
OPTIONS:
- the sclerotic cord
- the dynamic cord
- the lateral cord
- the spinal cord
the spinal cord

Answer the following question given this paragraph: When current flows in just one direction, it is called direct current (DC) . The diagram below shows how direct current flows through a simple circuit. An example of direct current is the current that flows through a battery-powered flashlight. In addition to batteries, solar cells and fuel cells can also provide direct current. Q: What kind of current flows in just one direction? A:
OPTIONS:
- physical current
- slow current
- Alternating current
- direct current

Answer: direct current

Question: Answer the following question given this paragraph: Placental mammals get their name from the placenta. This is a spongy structure that develops during pregnancy only in placental mammals. You can see where a human placenta forms in Figure below . The placenta sustains the fetus while it grows inside the mother's uterus. It consists of membranes and blood vessels from both mother and fetus. It allows substances to pass between the mother's blood and that of the fetus. The fetus gets oxygen and nutrients from the mother. It passes carbon dioxide and other wastes to the mother. Q: What sustains the fetus while it grows inside the mother's uterus? A:
OPTIONS:
- bacteria
- endometrium
- mitochondria
- placenta
Answer: placenta

input with options: Answer the following question given this paragraph: Some springs have water that contains minerals. Groundwater dissolves minerals out of the rock as it seeps through the pores. The water in some springs is hot because it is heated by hot magma. Many hot springs are also mineral springs. That's because hot water can dissolve more minerals than cold water. Q: The water in some springs are hot because they're heated by what? A:
OPTIONS:
- gravity
- the sun
- fires
- hot magma
output: hot magma

Q: Answer the following question given this paragraph: There is great variation among species that make up the animal kingdom. Some of this variation is shown in Figure below . Despite the variation, there are a number of traits that are shared by all animals. The fact that all animals have certain traits in common shows that they share a common ancestor. How did such a diverse group of organisms evolve? What traits do all animals share? Read on to find out. Q: The fact that all animals have certain traits in common shows that they share what? A:

OPTIONS:
- a common gene
- a common brain
- a common planet
- a common ancestor

A: a common ancestor

Answer the following question given this paragraph: When an earthquake will occur is much more difficult to predict. Stress on a fault builds up at the same rate over time. So earthquakes should occur at regular intervals. But, so far, scientists cannot predict when quakes will occur even to within a few years. Around Parkfield, California, an earthquake of magnitude 6.0 or higher occurs about every 22 years. So seismologists predicted that one would strike in 1993. But that quake came in 200411 years late ( Figure below ). Q: Stress building up at the same rate over time at a fault causes what phenomenon? A:
OPTIONS:
- erosion
- volcanoes
- storms
- earthquakes
earthquakes