Q: What may be lost when waves travel through matter, but not when they travel through space? Choices: - matter - frequency - threshold - energy A:
energy

Q: How do seed plants benefit from herbivores? Choices: - radiation of seeds - consumption of seeds - rainfall of seeds - dispersal of seeds A:
dispersal of seeds

Q: Q: Reducing waste, as well as reusing and recycling resources, can help save what? Choices: - eletrical resources - artificial resources - coral resources - natural resources A:
A: natural resources

Question: Q: Fish have a circulatory system with a two-chambered what? Choices: - brain - lung - stomach - heart A:
Answer: heart

*Question*
Q: What does the central cell develop into after double fertilization? Choices: - endocell - xygote - exosperm - endosperm A:
**Answer**
endosperm

Q: What often involves the loss of hydrogen, the gain of oxygen, or the loss of electrons? Choices: - decomposition - precipitation - carbonation - oxidation A:
oxidation