input: OPTIONS:
- carbon dating
- quarter-life
- alpha emission
- half-life Now, answer this question: Answer the following question given this paragraph: The rate of radioactive decay varies from one radioisotope to another. The rate is measured by the half-life. This is the length of time it takes for half of a given amount of a radioisotope to decay. Q: How is the radioactive decay measured? A:
A:
output: half-life

Answer the following question given this paragraph: The digestive system has three main functions: digestion of food, absorption of nutrients, and elimination of solid food waste. Digestion is the process of breaking down food into components the body can absorb. It consists of two types of processes: mechanical digestion and chemical digestion. Q: What is the process of breaking down food into components the body can absorb called? A:

OPTIONS:
- absorption
- filtration
- excretion
- digestion

Answer: digestion

Problem: OPTIONS:
- fission
- spawning
- budding
- fragmentation
Q: Answer the following question given this paragraph: Starfish reproduce by fragmentation and yeasts reproduce by budding. Both are types of asexual reproduction. Q: Which asexual reproduction method do starfish use to reproduce? A:
Answer: fragmentation

Problem:OPTIONS:
- changed
- moved
- observed
- destroyed

Answer the following question given this paragraph: The law of conservation of mass states that matter cannot be created or destroyed. Q: The law of conservation mass states that matter cannot be created or what? A:
****
A: destroyed

Answer the following question given this paragraph: Water treatment is a series of processes that remove unwanted substances from water. The goal of water treatment is to make the water safe to return to the natural environment or to the human water supply. Treating water for other purposes may not include all the same steps. That's because water used in agriculture or industry may not have to be as clean as drinking water. Q: What is a series of processes that remove unwanted substances from water called? A:
OPTIONS:
- water filtration
- water dilution
- water cleaning
- water treatment
water treatment

Answer the following question given this paragraph: This type of joint is found between the articular processes of adjacent vertebrae, at the acromioclavicular joint, or at the intercarpal joints of the hand and intertarsal joints of the foot. Ball-and-socket joints, in which the rounded head of a bone fits into a large depression or socket, are found at the shoulder and hip joints. Both plane and ball-and-sockets joints are classified functionally as multiaxial joints. However, ball-and-socket joints allow for large movements, while the motions between bones at a plane joint are small. Q: The shoulder and hip are examples of what type of joints? A:
OPTIONS:
- lever
- pivot
- hinge
- ball and socket

Answer:
ball and socket