input: OPTIONS:
- pollution
- oxygen
- disease
- algae Now, answer this question: Answer the following question given this paragraph: Amphibians play important roles in many ecosystems, especially as middle players in many food chains and food webs. In addition to consuming many worms and insects and other arthropods, and even some small reptiles and mammals and fish, they are prey for turtles and snakes, as well as some fish and birds. Tadpoles keep waterways clean by feeding on algae. Q: What do tadpoles clear out of waterways? A:
A:
output: algae

Answer the following question given this paragraph: The biological electron transport chain provides for an orderly, stepwise transfer of electrons. Both NADH (reduced nicotinamide adenine dinucleotide) and FADH2 (reduced flavin adenine dinucleotide) are energyrich molecules that liberate a large amount of energy during oxidation. Free energy released during the transfer of electrons from either of these molecules to oxygen drives the synthesis of ATP (adenosine triphosphate) formed during respiratory metabolism. The reactions are as follows:. Q: The biological electron transport chain provides for an orderly, stepwise transfer of electrons. both nadh (reduced nicotinamide adenine dinucleotide) and fadh2 (reduced flavin adenine dinucleotide) are energy rich molecules that liberate a large amount of energy during what? A:

OPTIONS:
- extrapolation
- conduction
- evaporation
- oxidation

Answer: oxidation

Problem: OPTIONS:
- microscope
- diameter
- focal point
- specimen
Q: Answer the following question given this paragraph: While the numerical aperture can be used to compare resolutions of various objectives, it does not indicate how far the lens could be from the specimen. This is specified by the "working distance," which is the distance (in mm usually) from the front lens element of the objective to the specimen, or cover glass. The higher the NA the closer the lens will be to the specimen and the more chances there are of breaking the cover slip and damaging both the specimen and the lens. The focal length of an objective lens is different than the working distance. This is because objective lenses are made of a combination of lenses and the focal length is measured from inside the barrel. The working distance is a parameter that microscopists can use more readily as it is measured from the outermost lens. The working distance decreases as the NA and magnification both increase. Q: While the numerical aperture can be used to compare resolutions of various objectives, it does not indicate how far the lens could be from the what? A:
Answer: specimen

Problem:OPTIONS:
- spirogyra
- methane
- xerophyte
- isooctane

Answer the following question given this paragraph: In the gasoline industry, what is called isooctane is actually 2,2,4-trimethylpentane. Draw the structure of isooctane. Q: What do they call 2,2,4-trimethylpentane in the gasoline industry? A:
****
A: isooctane

Answer the following question given this paragraph: Telescopes make distant objects appear both nearer and larger. You can see many more stars through a telescope than with the unaided eye. Q: What make distant objects appear both nearer and larger? A:
OPTIONS:
- astrolabes
- mirrors
- lasers
- telescopes
telescopes

Answer the following question given this paragraph: Longshore drift carries particles of sand and rock down a coastline. Q: Particles of sand and what other substance are carried by longshore drift? A:
OPTIONS:
- magma
- bone
- soil
- rock

Answer:
rock