Ques:Q: Group 15 of the periodic table is also called which group? Read this paragraph and choose the correct option from the provided answers: Group 15 of the periodic table is also called the nitrogen group. The first element in the group is the nonmetal nitrogen (N), followed by phosphorus (P), another nonmetal. Arsenic (As) ( Figure below ) and antimony (Sb) are the metalloids in this group, and bismuth (Bi) is a metal. All group 15 elements have five valence electrons, but they vary in their reactivity. Nitrogen, for example, is not very reactive at all, whereas phosphorus is very reactive and found naturally only in combination with other substances. All group 15 elements are solids, except for nitrogen, which is a gas. Choices: - oxygen - potassium - hydrogen - nitrogen A:

Ans:nitrogen
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Ques:Q: When the energy of the earthquake reaches shore, it forms a huge wave called? Read this paragraph and choose the correct option from the provided answers: When an earthquake occurs under the ocean, it sends waves through the water as well as the ground. When the energy of the earthquake reaches shore, it forms a huge wave called a tsunami. Choices: - a surge - a typhoon - a tidal wave - a tsunami A:

Ans:a tsunami
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Ques:Q: What type of oceans are hostile to algae and cytoplankton? Read this paragraph and choose the correct option from the provided answers: Warmer oceans are hostile to algae and cytoplankton , which are the most important absorbers of carbon dioxide. The loss of these two photosynthesizers would remove the most important natural sink. Choices: - deeper - shallower - colder - warmer A:

Ans:warmer
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Ques:Q: What is a large space that helps the organism digest & move nutrients around the cnidarian body? Read this paragraph and choose the correct option from the provided answers: Unlike the sponges which evolved prior to cnidarians, the cnidarians are made up of true tissues. The inside of a cnidarian is called the gastrovascular cavity , a large space that helps the organism digest and move nutrients around the body. The cnidarians also have nerve tissue organized into a net-like structure, known as a nerve-net, with connected nerve cells dispersed throughout the body. Cnidarians do not have true organs, however. Choices: - thorax - abdominal wall - vacuole - gastrovascular cavity A:

Ans:
gastrovascular cavity
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