The highest temperature ranges in the world are found in polar ice sheet climates
Indicate whether the statement is true or false
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Match the biome or aquatic system listed below with the description that best characterizes it
a. euphotic zone d. tropical grassland b. coral reef e. cold forest c. Lake f. temperate desert 10. a few species of coniferous trees 11. upper layer where large, fast-swimming predatory fishes are found 12. supports large grazing and browsing animals in East Africa 13. created by polyps and zooxanthellae 14. contains widely spaced, drought-resistant plants 15. phytoplankton carry out about 40% of the world's photosynthesis here 16. benthic zone is closest to the bottom 17. daytime temperatures are very high in summer, but low in winter 18. scattered clumps of trees may have thorns to discourage herbivores 19. small, needle-shaped leaves on trees can withstand cold winters
At 10°C, which is more concentrated-a saturated solution of sodium nitrate, NaNO3, or a saturated solution of sodium chloride? (See figure shown above)
A. At 10°C, a saturated solution of sodium nitrate, NaNO3, is more concentrated than a saturated solution of sodium chloride, NaCl. B. At 25°C, a saturated solution of sodium nitrate, NaNO3, is more concentrated than a saturated solution of sodium chloride, NaCl. C. At 10°C, a saturated solution of sodium chloride, NaCl, is more concentrated than a saturated solution of sodium nitrate, NaNO3 D. At 20°C, a saturated solution of sodium nitrate, NaNO3, is more concentrated than a saturated solution of sodium chloride, NaCl.
If a reaction occurs very rapidly, even at a relatively low temperature, which of the following is probably true?
A) The reaction is endothermic. B) The reaction is exothermic. C) The reaction has a low activation energy. D) The reaction occurs as a single step.
Avalanches _____
a. deposit raised rims, called levees b. are a type of slow mass wasting c. move along a curved slip plane d. move as a cohesive unit e. can consist of debris