Q: Q: Which outermost secondary xylem layers transport water? Read this paragraph and choose the correct option from the provided answers: Choices: - the farthest - the oldest - the narrowest - the youngest A:
A: the youngest

Q: Q: Both sexes of sockeye salmon turn red with green heads just prior to what? Read this paragraph and choose the correct option from the provided answers: Wild male and female Sockeye salmon before spawning. Sockeye salmon are blue tinged with silver in color while living in the ocean. Just prior to spawning, both sexes turn red with green heads. Sockeye spawn mostly in streams having lakes in their watershed. The young fish spend up to three years in the freshwater lake before migrating to the ocean. Migratory fish spend from one to four years in salt water, and thus are four to six years old when they return to spawn. Navigation to the home river is thought to be done using the characteristic smell of the stream, and possibly the sun. Choices: - dying - feeding - migrating - spawning A:
A: spawning

Q: Q: What is defined as the ability to cause changes in matter? Read this paragraph and choose the correct option from the provided answers: Energy is defined as the ability to cause changes in matter. You can change energy from one form to another when you lift your arm or take a step. In each case, energy is used to move matter you. The energy of moving matter is called kinetic energy . Choices: - evolution - momentum - nuclear - energy A:
A: energy

Q: Q: What element is typically used to shield things from gamma rays? Read this paragraph and choose the correct option from the provided answers: High-density materials are much more effective protection against gamma emissions than low-density ones. Gamma rays are usually blocked effectively by lead shielding. The thickness of the shielding will determine the effectiveness of the protection offered by the lead. Choices: - gold - silver - aluminum - lead A:
A: lead