Q: Answer the following question given this paragraph: All chemical changes involve a transfer of energy. When zinc reacts with hydrochloric acid, the test tube becomes very warm as energy is released during the reaction. Some other reactions absorb energy. While energy changes are a potential sign of a chemical reaction, care must be taken to ensure that a chemical reaction is indeed taking place. Physical changes may also involve a transfer of energy. A solid absorbs energy when it melts, and the condensation of a gas releases energy. The only way to be certain that a chemical reaction has occurred is to test the composition of the substances after the change has taken place to see if they are different from the starting substances. Q: All chemical changes involve a transfer of what? Choices: - heating - fuel - Water - energy A:
A: energy

Q: Answer the following question given this paragraph: Semen is the fluid that carries sperm through the urethra and out of the body. In addition to sperm, it contains secretions from the glands. The secretions control pH and provide sperm with nutrients for energy. Q: What is the fluid that carries sperm through the urethra and out of the body, and provides it with nutrients? Choices: - blood - bacteria - yeast - semen A:
A: semen

Q: Answer the following question given this paragraph: The energy of the sun is first captured by producers ( Figure below ), organisms that can make their own food. Many producers make their own food through the process of photosynthesis . The "food" the producers make is the sugar, glucose . Producers make food for the rest of the ecosystem. As energy is not recycled, energy must consistently be captured by producers. This energy is then passed on to the organisms that eat the producers, and then to the organisms that eat those organisms, and so on. Q: What is type of sugar is produced through photosynthesis? Choices: - carbohydrates - insulin - glutamate - glucose A:
A: glucose

Q: Answer the following question given this paragraph: Earthquakes at convergent plate boundaries mark the location of the subducting lithosphere. The motion of the lithosphere as it plunges through the mantle causes the quakes ( Figure below ). At greater depths, the plate heats up enough to deform plastically. Q: Earthquakes at convergent plate boundaries mark the location of the what? Choices: - abducting lithosphere - speeding lithosphere - shorting lithosphere - subducting lithosphere A:
A: subducting lithosphere