Answer the following question given this paragraph: Respiration that occurs without lungs. Insects have a system of internal tubes and sacs that oxygen travels through to reach body tissues. Air is taken in through the spiracles , openings on the sides of the abdomen. Q: On insects, what are the openings on the sides of the abdomen that allows respiration to occur? Choices: - gills - wings - chloroplasts - spiracles A:
spiracles
Answer the following question given this paragraph: Q: Within organs, arteries branch into what small vessels that convey blood to the capillaries? Choices: - Metarterioles - blood valves - aeortic vessels - arterioles A:
arterioles
Q: Answer the following question given this paragraph: Materials that are good conductors of thermal energy are called thermal conductors. Metals are very good thermal conductors. Q: Materials that are good conductors of thermal energy are called? Choices: - atmospheric conductors - thermal inductors - atmospheric inductors - thermal conductors A:
A: thermal conductors
Question: Answer the following question given this paragraph: Unsaturated hydrocarbons that contain at least one double bond are called alkenes . The name of a specific alkene always ends in ene , with a prefix indicating the number of carbon atoms. Figure below shows the structural formula for the smallest alkene. It has just two carbon atoms and is named ethene. Ethene is produced by most fruits and vegetables. It speeds up ripening and also rotting. Figure below shows the effects of ethene on bananas. Q: What is the name for unsaturated hydrocarbons that contain at least one double bond? Choices: - lipids - acids - enzymes - alkenes A:
Answer: alkenes
*Question*
Answer the following question given this paragraph: Nuclear fission is the splitting of the nucleus of a radioactive atom into two smaller nuclei. This type of reaction releases a great deal of energy from a very small amount of matter. Fission of a tiny pellet of radioactive uranium-235, like the one pictured in the Figure below , releases as much energy as burning 1,000 kilograms of coal!. Q: Splitting of the nucleus of a radioactive atom into two smaller nuclei yields what type of reaction, which releases a great deal of energy from a small amount of matter? Choices: - solar fission - nucleation - nuclear fusion - nuclear fission A:
**Answer**
nuclear fission
(Question)
Answer the following question given this paragraph: Most substances may exist in any of the three common states of matter. In the gaseous state, the molecular motion has completely overcome any attraction between the particles and the particles are totally separate from each other. There are large spaces between the particles and they move large distances between collisions. In the liquid state, the molecular motion and the molecular attractions are more balanced. While the particles stay more or less in contact with each other, they are still free to move and can slide past one another easily. In the solid state, the attractive forces dominate. The particles are pulled together into a tightly packed pattern which does not allow the particles to pass each other. The molecular motion in this form is essentially reduced to vibration in place. Increasing the temperature of a substance means increasing the molecular motion (kinetic energy) of the molecules in the substance. The phase in which a substance exists is the result of a competition between attractive forces and molecular motion. Q: In which state of matter are particles completely separate from one another? Choices: - phosphorus state - solid state - liquid state - gaseous state A:
(Answer)
gaseous state