Q: Q: Most arthropods are insects. the phylum also includes spiders, centipedes, and what? Read this paragraph and choose the correct option from the provided answers: Most arthropods are insects. The phylum also includes spiders, centipedes, and crustaceans. Choices: - amphibians - crystals - coral - crustaceans A:
A: crustaceans

Q: Q: What part of an atom is electrically neutral? Read this paragraph and choose the correct option from the provided answers: An atom's protons and electrons carry electrical charges. Protons, with their positive charge, are designated p+. Electrons, which have a negative charge, are designated e. An atom's neutrons have no charge: they are electrically neutral. Just as a magnet sticks to a steel refrigerator because their opposite charges attract, the positively charged protons attract the negatively charged electrons. This mutual attraction gives the atom some structural stability. The attraction by the positively charged nucleus helps keep electrons from straying far. The number of protons and electrons within a neutral atom are equal, thus, the atom's overall charge is balanced. Choices: - protons - electrons - newtons - neutrons A:
A: neutrons

Q: Q: For most waves, energy is proportional to what, a term that describes the height of the wave? Read this paragraph and choose the correct option from the provided answers: Light also behaves like a package of energy. It turns out that for light, the energy of the "package" of energy is proportional to its frequency. (For most waves, energy is proportional to wave amplitude, or the height of the wave. ) The mathematical equation that relates the energy (E) of light to its frequency is. Choices: - wave frequency - wave volume - wave threshold - wave amplitude A:
A: wave amplitude

Q: Q: Algae are like plants mainly because they contain what? Read this paragraph and choose the correct option from the provided answers: Algae are like plants mainly because they contain chloroplasts. This allows them to make food by photosynthesis. Algae are important producers in water-based ecosystems such as the ocean. On the other hand, algae lack other plant structures. For example, they don't have roots, stems, or leaves. Also unlike plants, some algae can move. They may move with pseudopods or flagella. Choices: - organelles - cells - cell wall - chloroplasts A:
A: chloroplasts