Answer the following question given this paragraph: As you can see in the Figure above , the electric and magnetic fields that make up an electromagnetic wave are perpendicular (at right angles) to each other. Both fields are also perpendicular to the direction that the wave travels. Therefore, an electromagnetic wave is a transverse wave. However, unlike a mechanical transverse wave, which can only travel through matter, an electromagnetic transverse wave can travel through empty space. When waves travel through matter, they lose some energy to the matter as they pass through it. But when waves travel through space, no energy is lost. Therefore, electromagnetic waves don't get weaker as they travel. However, the energy is "diluted" as it travels farther from its source because it spreads out over an ever-larger area. Q: What may be lost when waves travel through matter, but not when they travel through space? Choices: - matter - frequency - threshold - energy A:
energy
Answer the following question given this paragraph: Herbivory has been used by seed plants for their own benefit in a display of mutualistic relationships. The dispersal of fruit by animals is the most striking example. The plant offers to the herbivore a nutritious source of food in return for spreading the plant's genetic material to a wider area. An extreme example of collaboration between an animal and a plant is the case of acacia trees and ants. The trees support the insects with shelter and food. In return, ants discourage herbivores, both invertebrates and vertebrates, by stinging and attacking leaf-eating insects. 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: Answer the following question given this paragraph: Reducing waste, as well as reusing and recycling resources, can help save natural resources. 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: Answer the following question given this paragraph: Fish have a circulatory system with a two-chambered heart. Their digestive system is complete and includes several organs and glands. Jawed fish use their jaws and teeth to grind up food before passing it to the rest of the digestive tract. This allows them to consume larger prey. Q: Fish have a circulatory system with a two-chambered what? Choices: - brain - lung - stomach - heart A:
Answer: heart
*Question*
Answer the following question given this paragraph: Q: What does the central cell develop into after double fertilization? Choices: - endocell - xygote - exosperm - endosperm A:
**Answer**
endosperm
Answer the following question given this paragraph: Oxidation often involves the loss of hydrogen, the gain of oxygen, or the loss of electrons. Q: What often involves the loss of hydrogen, the gain of oxygen, or the loss of electrons? Choices: - decomposition - precipitation - carbonation - oxidation A:
oxidation