Q: You are presented with the quiz "What are just as nutritious as animals without backbones?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "invertebrates are animals that lack a vertebral column, or backbone" and "invertebrates are just as nutritious as vertebrates". So, what's the best answer to the question? | OPTIONS:
- Organic compounds
- bioaerosols
- Most plants
- dinosaurs
- skunks
- birds
- animals with backbones
- microorganisms
A: animals with backbones

Q: You are presented with the quiz "What can DNA do?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "dNA is found in chromosomes" and "first the chromosomes duplicate themselves". So, what's the best answer to the question? | OPTIONS:
- Plant growth is reduced
- enormous damage to homes
- switch its helix
- reproduce
- duplicate itself
- implant on on other genes
- keeps the organism warm
- rearrange chromosomes
A: duplicate itself

Q: You are presented with the quiz "What causes ice sculptures to turn to liquid? " But you don't know the answer, so you turn to your teacher to ask for hints. He says that "melting means changing from a solid into a liquid by adding heat energy" and "ice Sculptures melt away". So, what's the best answer to the question? | OPTIONS:
- UV rays
- Snow
- salt and water.
- Heat energy
- air cools
- kinetic energy
- Subzero temperatures
- Water expanding
A: Heat energy

Q: You are presented with the quiz "A flashlight battery stores what inside?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "aflashlight converts chemical energy into light energy" and "students should describe how the electrical energy from the batteries changed to light energy in the flashlight bulb and then to heat energy that could be felt". So, what's the best answer to the question? | OPTIONS:
- hydrogen and oxygen
- chemical energy.
- Calcium carbonate
- motion
- electricity
- heat
- light
- objects that have mass
A: chemical energy.