Problem:OPTIONS:
- rotational cliffs
- horizontal cliffs
- diagonal cliffs
- vertical cliffs

Answer the following question given this paragraph: When the wind drops fine particles of silt and clay, it forms deposits called loess ( Figure below ). Loess deposits form vertical cliffs. Loess can become a thick, rich soil. That's why loess deposits are used for farming in many parts of the world. Q: What do loess deposits form? A:
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A: vertical cliffs

Problem:OPTIONS:
- carbon
- short filaments
- short particles
- short microtubules

Answer the following question given this paragraph: Centrioles are made of short microtubules and are very important in cell division. Q: What are centrioles made from? A:
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A: short microtubules

Problem:OPTIONS:
- sunlight
- sucrose
- carbon dioxide
- food

Answer the following question given this paragraph: 15.1 | Features of the Animal Kingdom By the end of this section, you will be able to: List the features that distinguish the animal kingdom from other kingdoms Explain the processes of animal reproduction and embryonic development Describe the hierarchy of basic animal classification Compare and contrast the embryonic development of protostomes and deuterostomes Even though members of the animal kingdom are incredibly diverse, animals share common features that distinguish them from organisms in other kingdoms. All animals are eukaryotic, multicellular organisms, and almost all animals have specialized tissues. Most animals are motile, at least during certain life stages. Animals require a source of food to grow and develop. All animals are heterotrophic, ingesting living or dead organic matter. This form of obtaining energy distinguishes them from autotrophic organisms, such as most plants, which make their own nutrients through photosynthesis and from fungi that digest their food externally. Animals may be carnivores, herbivores, omnivores, or parasites (Figure 15.2). Most animals reproduce sexually: The offspring pass through a series of developmental stages that establish a determined body plan, unlike plants, for example, in which the exact shape of the body is indeterminate. The body plan refers to the shape of an animal. Q: What do animals require to grow and develop? A:
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A: food

Problem:OPTIONS:
- Amphibians
- Birds
- Mammals
- tetrapods

Answer the following question given this paragraph: Amphibians are vertebrates that exist in two worlds. They divide their time between freshwater and terrestrial habitats. They share a number of features with air-breathing lungfish, but they also differ from lungfish in many ways. One way they differ is their appendages. Amphibians are the first true tetrapods, or vertebrates with four limbs. Modern amphibians include frogs, salamanders, and caecilians, as shown Figure below . Q: Vertebrates with four limbs are also called what? A:
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A:
tetrapods