Answer the following question given this paragraph: A model serves a useful purpose it gives us an idea of what the real thing is like. The model plane seen above has wings, a tail, and an engine just like the real thing. This model also has a propeller, as is the case with most small planes and some smaller passenger planes. However, the model is not the real thing. We certainly cannot fly people or cargo in the model (besides maybe a tiny mouse), but we can get some idea of what a real plane looks like and how it works. Q: What are models good for? Choices: - they are expensive to make - they are identical to the real thing - they are independent variables - they give us an idea of what the real thing is like A:
they give us an idea of what the real thing is like
(Question)
Answer the following question given this paragraph: Flatworms The relationships among flatworms, or phylum Platyhelminthes, is being revised and the description here will follow the traditional groupings. Most flatworms are parasitic, including important parasites of humans. Flatworms have three embryonic germ layers that give rise to surfaces covering tissues, internal tissues, and the lining of the digestive system. The epidermal tissue is a single layer of cells or a layer of fused cells covering a layer of circular muscle above a layer of longitudinal muscle. The mesodermal tissues include support cells and secretory cells that secrete mucus and other materials to the surface. The flatworms are acoelomate, so their bodies contain no cavities or spaces between the outer surface and the inner digestive tract. Physiological Processes of Flatworms Free-living species of flatworms are predators or scavengers, whereas parasitic forms feed from the tissues of their hosts. Most flatworms have an incomplete digestive system with an opening, the "mouth," that is also used to expel digestive. Q: Unlike free-living species of flatworms that are predators or scavengers, what forms feed from the tissues of their hosts? Choices: - aquatic - mutualistic - herbiverous - parasitic A:
(Answer)
parasitic
Ques: Answer the following question given this paragraph: The lymphatic system is a network of vessels and tissues that carry a clear fluid called lymph. The lymphatic system ( Figure below ) spreads all around the body and filters and cleans the lymph of any debris, abnormal cells, or pathogens. Lymph vessels are tube-shaped, just like blood vessels, with about 500-600 lymph nodes (in an adult) attached. The lymphatic system works with the cardiovascular system to return body fluids to the blood. The lymphatic system and the cardiovascular system are often called the body's two "circulatory systems. ". Q: What is the network of vessels and tissues that carry a clear fluid called lymph called? Choices: - excretory system - vessel system - cleansing system - lymphatic system A:
Ans: lymphatic system
(Q).
Answer the following question given this paragraph: Bony fish may live in salt water or freshwater. They consume a wide range of foods. For example, they may eat algae, smaller fish, detritus, or dead organisms, depending on the species of fish. Q: Bony fish can live in either of what type of aquatic biome? Choices: - coral reefs or freshwater - oceans or estuaries - estuaries or saltwater - saltwater or freshwater A:
(A).
saltwater or freshwater
Ques:Answer the following question given this paragraph: Electrons are organized into shells and subshells about the nucleus of an atom. Q: Electrons are organized into shells and subshells about the nucleus of this? Choices: - compound - molecule - element - atom A:

Ans:atom
Answer the following question given this paragraph: Cnidarians in the polyp form usually reproduce asexually. One type of asexual reproduction in polyps leads to the formation of new medusae. Medusae usually reproduce sexually with sperm and eggs. Fertilization forms a zygote. The zygote develops into a larva, and the larva develops into a polyp. There are many variations on this general life cycle. Obviously, species that exist only as polyps or medusae have a life cycle without the other form. Q: What is the stage between a zygote and polyp? Choices: - pupa - egg - worm - larva A:
larva