Answer the following question given this paragraph: The ocean is becoming increasingly polluted with trash. Ocean acidification is also occurring because ocean water dissolves some of the excess carbon dioxide in the atmosphere. The more acidic water harms aquatic organisms. Q: Ocean acidification results from the ocean absorbing what gas from the atmosphere? Choices: - hydrogen - nitrogen - oxygen - carbon dioxide A:
carbon dioxide
(Question)
Answer the following question given this paragraph: Young reptiles, like the baby alligator in Figure below , look like smaller versions of the adults. They don't have a larval stage as most amphibians do. Baby reptiles are able to move and search for food but are at high risk of predation. Adult reptiles rarely provide any care for their offspring once the eggs are laid. The only exceptions are female alligators and crocodiles. They defend their eggs and hatchlings from predators and help them reach the water. Q: What developmental stage do alligators lack that most other amphibians have? Choices: - Tadpole stage - metamorphosis - Egg Stage - larval stage A:
(Answer)
larval stage
Ques: Answer the following question given this paragraph: Plates move for two reasons. Upwelling mantle at the mid-ocean ridge pushes plates outward. Cold lithosphere sinking into the mantle at a subduction zone pulls the rest of the plate down with it. Q: Upwelling mantle at the mid-ocean ridge pushes plates in which direction? Choices: - eastward - inward - westward - outward A:
Ans: outward
(Q).
Answer the following question given this paragraph: Heavier isotopes of plutoniumPu-240, Pu-241, and Pu-242are also produced when lighter plutonium nuclei capture neutrons. Some of this highly radioactive plutonium is used to produce military weapons, and the rest presents a serious storage problem because they have half-lives from thousands to hundreds of thousands of years. Although they have not been prepared in the same quantity as plutonium, many other synthetic nuclei have been produced. Nuclear medicine has developed from the ability to convert atoms of one type into other types of atoms. Radioactive isotopes of several dozen elements are currently used for medical applications. The radiation produced by their decay is used to image or treat various organs or portions of the body, among other uses. The elements beyond element 92 (uranium) are called transuranium elements. As of this writing, 22 transuranium elements have been produced and officially recognized by IUPAC; several other elements have formation claims that are waiting for approval. Some of these elements are shown in Table 21.3. Preparation of Some of the Transuranium Elements Name. Q: Heavier isotopes of plutonium are also produced when lighter plutonium nuclei capture what? Choices: - protons - electrons - molecules - neutrons A:
(A).
neutrons
Ques:Answer the following question given this paragraph: Heat from a wood fire can boil a pot of water. If you put an egg in the pot, you can eat a hard boiled egg in 15 minutes (cool it down first!). The energy to cook the egg was stored in the wood. The wood got that energy from the Sun when it was part of a tree. The Sun generated the energy by nuclear fusion. You started the fire with a match. The head of the match stores energy as chemical energy. That energy lights the wood on fire. The fire burns as long as there is energy in the wood. Once the wood has burned up, there is no energy left in it. The fire goes out. Q: How does the sun generate energy? Choices: - atomic division - matter multiplication - certain fusion - nuclear fusion A:

Ans:nuclear fusion
Ques:Answer the following question given this paragraph: In the predator-prey example, one factor limits the growth of the other factor. As the prey population deceases, the predator population is begins to decrease as well. The prey population is a limiting factor. A limiting factor limits the growth or development of an organism, population, or process. Q: What is the term for something that limits the growth or development of an organism, population, or process? Choices: - controlling factor - stumbling block - variable - limiting factor A:

Ans:
limiting factor