Q: In a displacement graph, the slope of the line is the average what? Read this paragraph and choose the correct option from the provided answers: Example 2.17 Determining Average Velocity from a Graph of Displacement versus Time: Jet Car Find the average velocity of the car whose position is graphed in Figure 2.47. Strategy The slope of a graph of x vs. t is average velocity, since slope equals rise over run. In this case, rise = change in displacement and run = change in time, so that. Choices: - direction - speed - time - velocity A:
velocity

Q: What cannot be created or destroyed in a chemical reaction? Read this paragraph and choose the correct option from the provided answers: Law stating that matter cannot be created or destroyed in chemical reactions. Choices: - heat - mass - energy - matter A:
matter

Q: What traits do the sponge and tarantula share? Read this paragraph and choose the correct option from the provided answers: One trait invertebrates like the sponge and tarantula share is lack of a backbone. In fact, they don't have any bones at all. These are defining traits of all invertebrates. Some invertebrates have a skeleton, but it isn't made of bone. Many other traits of invertebrates show considerable diversity. Choices: - number of eyes - number of legs - lifespan - lack of backbone A:
lack of backbone

Q: Organisms that lack both a nucleus and membrane-bound organelles are known as what, in general? Read this paragraph and choose the correct option from the provided answers: Two of the three domainsBacteria and Archaeaare prokaryotic, meaning that they lack both a nucleus and true membrane-bound organelles. However, they are now considered, on the basis of membrane structure and rRNA, to be as different from each other as they are from the third domain, the Eukarya. Prokaryotes were the first inhabitants on Earth, perhaps appearing approximately 3.9 billion years ago. Today they are ubiquitousinhabiting the harshest environments on the planet, from boiling hot springs to permanently frozen environments in Antarctica, as well as more benign environments such as compost heaps, soils, ocean waters, and the guts of animals (including humans). The Eukarya include the familiar kingdoms of animals, plants, and fungi. They also include a diverse group of kingdoms formerly grouped together as protists. Choices: - photosynthetic - barren - trophic - prokaryotic A:
prokaryotic