Q: Answer the following question given this paragraph: In some chordates, all four traits persist throughout life and serve important functions. However, in many chordates, including humans, all four traits are present only during the embryonic stage. After that, some of the traits disappear or develop into other organs. For example, in humans, pharyngeal slits are present in embryos and later develop into the middle ear. Q: In humans, pharyngeal slits later develop into what? A:

OPTIONS:
- inner ear
- outer ear
- long ear
- middle ear

A: middle ear

input: OPTIONS:
- iron oxide
- rust
- sulfuric acid
- iron sulfide Now, answer this question: Answer the following question given this paragraph: When iron and sulfur are mixed together in a certain ratio and heated, a chemical reaction occurs. This results in the formation of a unique new compound, called iron sulfide (FeS). A magnet cannot be used to mechanically separate the iron from the iron sulfide because metallic iron does not exist in the compound. Instead, another chemical reaction is required to separate the iron and sulfur. Q: When iron and sulfur are mixed together in a certain ratio and heated, what do they become? A:
A:
output: iron sulfide

Answer the following question given this paragraph: A sex chromosome is a chromosome that determines the sex of an organism. Humans have two sex chromosomes, X and Y . Females have two X chromosomes ( XX ), and males have one X and one Y chromosome ( XY ). An autosome is any chromosome other than a sex chromosome. If a trait is autosomal it will affect males and females equally. Q: What chromosome determines the sex of an organism? A:

OPTIONS:
- ribosome
- S chromosome
- autosome
- sex chromosome

Answer: sex chromosome

Problem: OPTIONS:
- autotrophs
- plants
- insects
- phototrophs
Q: Answer the following question given this paragraph: Because glaciers move, they have characteristic features like crevasses and bergshrunds. Q: What organism captures light energy and converts it to chemical energy inside its cell? A:
Answer: phototrophs

Problem:OPTIONS:
- kinetics
- vibration
- temperature
- friction

Answer the following question given this paragraph: Tennis is played on a variety of court surfaces: grass, clay, hardcourt, and even carpet. Players know that matches on different surfaces are distinctly different games. The ball bounces differently, and shoes slip on some surfaces but stick on others. These differences are a result of friction. Q: What force explains why a tennis ball bounces differently on different surfaces, and shoes slip on some surfaces but stick on others? A:
****
A: friction

Problem:OPTIONS:
- sexual reproduction
- cross-breeding
- grafting
- cloning

Answer the following question given this paragraph: Q: What is the only commercial way of reproducing plants such as orchids? A:
****
A:
cloning