Answer the following question given this paragraph: It may seem as though burning destroys matter, but the same amount, or mass, of matter still exists after a campfire as before. Look at the sketch in Figure below . It shows that when wood burns, it combines with oxygen and changes not only to ashes but also to carbon dioxide and water vapor. The gases float off into the air, leaving behind just the ashes. Suppose you had measured the mass of the wood before it burned and the mass of the ashes after it burned. Also suppose you had been able to measure the oxygen used by the fire and the gases produced by the fire. What would you find? The total mass of matter after the fire would be the same as the total mass of matter before the fire. Q: It may seem as though burning destroys matter, but the same amount of what, still exists after a campfire as before? A:

OPTIONS:
- termperature
- concentrations
- energy
- mass

Answer: mass

Problem: OPTIONS:
- nose system signals
- skeletal system signals
- heart system signals
- nervous system signals
Q: Answer the following question given this paragraph: may be located in organs or tissues that have functions in addition to hormone production. Hormones circulate throughout the body and stimulate a response in cells that have receptors able to bind with them. The changes brought about in the receiving cells affect the functioning of the organ system to which they belong. Many of the hormones are secreted in response to signals from the nervous system, thus the two systems act in concert to effect changes in the body. Q: Many of the hormones are secreted in response to what signals of the body? A:
Answer: nervous system signals

Problem:OPTIONS:
- molecular spectrum
- solar spectrum
- measured spectrum
- electromagnetic spectrum

Answer the following question given this paragraph: Energy from the Sun has a wide range of wavelengths. The total range of energy is called the electromagnetic spectrum ( Figure below ). Q: What is the total range of the energy from the sun called? A:
****
A: electromagnetic spectrum

Answer the following question given this paragraph: Kinetic energy is the energy of anything in motion. Your muscles move your leg, your foot kicks the ball, and the ball gains kinetic energy ( Figure below ). The kinetic energy was converted from potential energy that was in your leg before the kick. The action of kicking the ball is energy changing forms. The same is true for anything that involves change. Q: Which type of energy is the energy of anything in motion? A:
OPTIONS:
- residual engergy
- diffuse energy
- physiological engergy
- kinetic engergy
kinetic engergy

Answer the following question given this paragraph: There are few organisms that live in the deepest ocean. The ones that do have amazing adaptations to the exceptionally harsh conditions. Q: What is necessary for organisms to survive in the deepest parts of the ocean? A:
OPTIONS:
- reflexes
- mutation
- competition
- adaptations

Answer: adaptations

input with options: Answer the following question given this paragraph: 31.3 Nutritional Adaptations of Plants Atmospheric nitrogen is the largest pool of available nitrogen in terrestrial ecosystems. However, plants cannot use this nitrogen because they do not have the necessary enzymes. Biological nitrogen fixation (BNF) is the conversion of atmospheric nitrogen to ammonia. The most important source of BNF is the symbiotic interaction between soil bacteria and legumes. The bacteria form nodules on the legume's roots in which nitrogen fixation takes place. Fungi form symbiotic associations (mycorrhizae) with plants, becoming integrated into the physical structure of the root. Through mycorrhization, the plant obtains minerals from the soil and the fungus obtains photosynthate from the plant root. Ectomycorrhizae form an extensive dense sheath around the root, while endomycorrhizae are embedded within the root tissue. Some plantsparasites, saprophytes, symbionts, epiphytes, and insectivoreshave evolved adaptations to obtain their organic or mineral nutrition from various sources. Q: What process refers to the conversion of atmospheric nitrogen to ammonia? A:
OPTIONS:
- biological nutrient fixation
- biological ammonia fixation
- biological respiratory fixation
- biological nitrogen fixation
output:
biological nitrogen fixation