Q: Q: Female monotremes share what external opening with reptiles and birds? Choices: - urethra - vagina - anus - cloaca A:
A: cloaca

Q: Q: Potential energy is present in objects that are what? Choices: - crystals - rigid - unstable - elastic A:
A: elastic

Q: Q: Food chains and what describe the transfer of energy within an ecosystem, from one organism to another? Choices: - spider webs - fuel webs - the webs - food webs A:
A: food webs

Q: Q: What crystals consist of molecules at the lattice points of the crystal, held together by relatively weak intermolecular forces? Choices: - quartz crystals - salt crystals - healing crystals - molecular crystals A:
A: molecular crystals