Answer the following question given this paragraph: Flowering vascular plants also have diverse leaves. However, the leaves of all flowering plants have two basic parts in common: the blade and petiole. The blade of the leaf is the relatively wide, flat part of the leaf that gathers sunlight and undergoes photosynthesis. The petiole is the part that attaches the leaf to a stem of the plant. This occurs at a node. Q: What are the two basic parts that all flowering plants have in common? Choices: - metal and petiole - stalk and petiole - leaf and petiole - blade and petiole A:
blade and petiole
Answer the following question given this paragraph: Gene expression and protein synthesis are usually considered the same molecular process. Q: Gene expression and what else are usually considered the same molecular process? Choices: - photosynthesis - subtractive synthesis - organism synthesis - protein synthesis A:
protein synthesis
Q: Answer the following question given this paragraph: Processes in which matter changes between liquid and solid states are freezing and melting. Q: Processes in which matter changes between liquid and solid states are freezing and? Choices: - boiling - steaming - transpiration - melting A:
A: melting
Question: Answer the following question given this paragraph: When geologic and climatic conditions are changing, evolution may occur more quickly. Thus, long periods of little change may be interrupted by bursts of rapid change. This model of the timing of evolution is called punctuated equilibrium . It is better supported by the fossil record than is gradualism. This model suggests that niches left open by sudden geologic and climatic changes may be rapidly filled by bursts of evolution. Q: Sudden changes in geologic and climatic conditions can spur what process? Choices: - generation - cloning - symbiosis - evolution A:
Answer: evolution
*Question*
Answer the following question given this paragraph: Water is recycled constantly through the ecosystem. That means any water you drank today has been around for millions of years. You could be drinking water that was once drunk by George Washington, the first humans, or even the dinosaurs. Q: Water is recycled constantly through which system? Choices: - the hydropshere - the habitat - the troposphere - the ecosystem A:
**Answer**
the ecosystem
*Question*
Answer the following question given this paragraph: Waves may reflect off an obstacle that they are unable to pass through. When waves are reflected straight back from an obstacle, the reflected waves interfere with the original waves and create standing waves . These are waves that appear to be standing still. Standing waves occur because of a combination of constructive and destructive interference. You can see animations of standing waves at the URLs below. Q: What do waves do when they are unable to pass through an object? Choices: - produce off - Roll over. - develop off - reflect off A:
**Answer**
reflect off