Answer the following question given this paragraph: In which of the following regions would you expect to find photosynthetic organisms? a. The aphotic zone, the neritic zone, the oceanic zone, and the benthic realm. The photic zone, the intertidal zone, the neritic zone, and the oceanic zone. The photic zone, the abyssal zone, the neritic zone, and the oceanic zone. The pelagic realm, the aphotic zone, the neritic zone, and the oceanic zone. Coral Reefs Coral reefs are ocean ridges formed by marine invertebrates living in warm shallow waters within the photic zone of the ocean. They are found within 30 north and south of the equator. The Great Barrier Reef is a well-known reef system located several miles off the northeastern coast of Australia. Other coral reefs are fringing islands, which are directly adjacent to land, or atolls, which are circular reefs surrounding a former island that is now underwater. The coral-forming colonies of organisms (members of phylum Cnidaria) secrete a calcium carbonate skeleton. These calcium-rich skeletons slowly accumulate, thus forming the underwater reef (Figure 20.29). Corals found in shallower waters (at a depth of approximately 60 m or about 200 ft) have a mutualistic relationship with photosynthetic unicellular protists. The relationship provides corals with the majority of the nutrition and the energy they require. The waters in which these corals live are nutritionally poor and, without this mutualism, it would not be possible for large corals to grow because there are few planktonic organisms for them to feed on. Some corals living in deeper and colder water do not have a mutualistic relationship with protists; these corals must obtain their energy exclusively by feeding on plankton using stinging cells on their tentacles. Q: Ocean ridges formed by marine invertebrates living in warm shallow waters within the photic zone of the ocean are called what? Choices: - lagoon - trenches - break water - coral reefs A:
coral reefs
Answer the following question given this paragraph: Figure 21.14 Vaccinations are designed to boost immunity to a virus to prevent infection. (credit: USACE Europe District). Q: Vaccinations are designed to boost immunity to a virus to prevent this? Choices: - mutation - reproduction - pathogen - infection A:
infection
Q: Answer the following question given this paragraph: Pyrite has a similar color to gold. The appearance of the striations make pyrite different from gold. Q: What color is pyrite? Choices: - blue - black - silver - gold A:
A: gold
Question: Answer the following question given this paragraph: Explosive waste is likely to explode. The risk of explosion may be greater if the waste is mixed with other substances. Q: What type of waste is likely to explode? Choices: - liquid waste - mesh waste - solid waste - explosive waste A:
Answer: explosive waste
*Question*
Answer the following question given this paragraph: The Earth, Moon and Sun are linked together in space. Monthly or daily cycles continually remind us of these links. Every month, you can see the Moon change. This is due to where it is relative to the Sun and Earth. In one phase, the Moon is brightly illuminated - a full moon. In the opposite phase it is completely dark - a new moon. In between, it is partially lit up. When the Moon is in just the right position, it causes an eclipse. The daily tides are another reminder of the Moon and Sun. They are caused by the pull of the Moon and the Sun on the Earth. Tides were discussed in the Oceans chapter. Q: In what phase is the moon brightly illuminated? Choices: - crescent - new moon - blue moon - full moon A:
**Answer**
full moon
(Q).
Answer the following question given this paragraph: The stems of all vascular plants get longer through primary growth. This occurs in primary meristem at the tips and nodes of the stems. Most stems also grow in thickness through secondary growth. This occurs in secondary meristem, which is located in and around the vascular tissues. Secondary growth forms secondary vascular tissues and bark. In many trees, the yearly growth of new vascular tissues results in an annual growth ring like the one in Figure below . When a tree is cut down, the rings in the trunk can be counted to estimate the tree's age. Q: The stems of all vascular plants get longer through primary growth. this occurs in primary meristem at the tips and ______ of the stems. Choices: - edges - bottoms - layers - nodes A:
(A).
nodes