Q: What type of interspecies relationship involves one party being actively harmed? Choices: - mosaicism - symbiosis - mutualism - parasitism A:
parasitism

Q: The best thermal conductors are also the best conductors of what, which is also related to the density of free electrons in them? Choices: - light - pollution - sound - electricity A:
electricity

Q: Q: Bacteria may divide several what an hour? Choices: - cells - hosts - days - times A:
A: times

Question: Q: On the ventral side of the embryonic disc, opposite the amnion, cells in the lower layer of the embryonic disk (the hypoblast) extend into the blastocyst cavity and form this? Choices: - embryo sac - neural sac - algae sac - yolk sac A:
Answer: yolk sac

*Question*
Q: Along with other elements, most ores are made of what? Choices: - coal - crystals - sodium - metal A:
**Answer**
metal

Q: In which organs does gas exchange take place between blood and air? Choices: - liver and spleen - kidneys - esophagus and larynx - lungs A:
lungs