Answer the following question given this paragraph: Unlike that of the Hexapoda, the head and thorax of most crustaceans is fused to form a cephalothorax (Figure 28.40), which is covered by a plate called the carapace, thus producing a body structure of two tagma. Crustaceans have a chitinous exoskeleton that is shed by molting whenever the animal increases in size. The exoskeletons of many species are also infused with calcium carbonate, which makes them even stronger than in other arthropods. Crustaceans have an open circulatory system where blood is pumped into the hemocoel by the dorsally located heart. Hemocyanin and hemoglobin are the respiratory pigments present in these animals. Q: In most crustaceans, what two structures fuse to form a cephalothorax? Choices: - foot and toes - body and shoulders - wing and legs - head and thorax A:
head and thorax
Answer the following question given this paragraph: People pollute water when they apply excess chemicals to their lawn. They may also dispose of pollutants incorrectly. Q: What do people apply to their lawns that causes water pollution? Choices: - seeds - manure - water - chemicals A:
chemicals
Q: Answer the following question given this paragraph: Q: In which phase do the chromosomes duplicate? Choices: - prophase - metaphase - mitosis - interphase A:
A: interphase
Question: Answer the following question given this paragraph: Amides are actually formed by bringing together an amine-containing molecule and a carboxylic acidcontaining molecule. A molecule of H2O is lost, much like when an ester forms:. Q: Amides are actually formed by bringing together an amine-containing molecule and molecule containing what? Choices: - oxidize acid - polymer acid - Fatty acid - carboxylic acid A:
Answer: carboxylic acid
*Question*
Answer the following question given this paragraph: Within a group, the ionization energy decreases as the size of the atom gets larger. On the graph, we see that the ionization energy increases as we go up the group to smaller atoms. In this situation, the first electron removed is farther from the nucleus as the atomic number (number of protons) increases. Being farther away from the positive attraction makes it easier for that electron to be pulled off. Q: Within a group, the ionization energy decreases as the size of the atom gets what? Choices: - brighter - smaller - lighter - larger A:
**Answer**
larger
Answer the following question given this paragraph: Q: What common sea creature can be both awake and asleep at the same time? Choices: - sharks - Whales - reefs - dolphins A:
dolphins