Answer the following question given this paragraph: Structures like the human tail bone are called vestigial structures . Evolution has reduced their size because the structures are no longer used. The human appendix is another example of a vestigial structure. It is a tiny remnant of a once-larger organ. In a distant ancestor, it was needed to digest food. It serves no purpose in humans today. Why do you think structures that are no longer used shrink in size? Why might a full-sized, unused structure reduce an organism's fitness?. Q: What purpose does the appendix serve in humans today? Choices: - work - filters blood - digests food - none A:
none
(Question)
Answer the following question given this paragraph: Ocean water releases dissolved carbon dioxide into the atmosphere when water temperature rises. Q: Ocean water releases dissolved carbon dioxide into the atmosphere when what happens to the temperature? Choices: - Later - Drops - Goes Down - it rises A:
(Answer)
it rises
Ques: Answer the following question given this paragraph: Population size is the number of individuals in a population. Population density is the average number of individuals per unit of area or volume. The pattern of spacing of individuals in a population may be affected by characteristics of a species or its environment. Q: What is the average number of individuals per unit of area or volume called? Choices: - crowdedness - population structure - population count - population density A:
Ans: population density
(Q).
Answer the following question given this paragraph: Collision theory states that chemical reactions occur when atoms, ions, or molecules collide. In other words, these species need to make contact with one another in order for a reaction to take place. Based on this concept, along with a couple of other key points, collision theory helps to explain why certain factors will influence the rate of a chemical reaction. Q: What states that chemical reactions occur when atoms, ions, or molecules collide? Choices: - disturbance theory - reaction theory - elemental theory - collision theory A:
(A).
collision theory
Ques:Answer the following question given this paragraph: Q: Tuataras, lizards, and snakes are members of what subclass of reptiles? Choices: - dinosaurs - arthropods - staurikosaurus - lepidosaurs A:

Ans:lepidosaurs
Answer the following question given this paragraph: Acceleration occurs when a force is applied to a moving object. Q: What occurs when force is applied to a moving object? Choices: - stimulation - inertia - transmission - acceleration A:
acceleration