41. The process by which plants absorb carbon dioxide and release oxygen to make food is called .
42. The relationship called benefits one organism while harming the other (example: ticks and animals)
43. The release of water into the atmosphere by plants is called .
44. The sequence of one organism feeding upon another at a lower trophic level is called a food .
45. The struggle among organisms for limited resources is called .
46. The study of the relationships of living things to each other and to their environment is called .
47. The surroundings in which a particular species can be found is called its .
48. succession occurs in abandoned farm fields.
49. is the frozen ground, below 1 meter, that never thaws.
50. waters contain little nutrients and little life.
51. waters contains abundant nutrients and life.
52. Tropical forests exist in tropical areas where rainfall is around 200 inches per year.
53. A is a special type of grassland located in tropical or subtropical areas. These areas may have scattered
trees and remain warm all year long.
54. A biome dominated by grasses is called a , prairie, steppe, or veldt.
55. A biome with a cold, dry climate, long winters, short cool summers, found near the poles and in high mountains is called .
56. A community that will remain stable as long as the area is undisturbed is called a community.
57. A/An is a body of water where fresh and salt water mix.
58. An extensive area of similar climate and vegetation is called a .
59. Areas of less than 8 in. of rainfall per year are called .
60. Areas of thick, almost impassable vegetation within a rain forest are called .
61. Common animals in the deciduous forest are deer, mice, , fox, bear, snakes, and lizards.
62. Common animals in the tundra are caribou, , musk ox, polar pears, arctic foxes, arctic hares, ptarmigans, and lemmings.
63. Common animals of the taiga include moose, bear, lynx, elk, mule deer, , rodents, hares, and birds.
64. Common plants in the deciduous forest are oak, maple, and trees.
65. Common plants in the tundra are lichens and .
66. Common plants of the taiga include conifer trees like spruce, fir, or .
67. Dead organic matter is called .
68. Each intermediate community that will be replaced by the next is called a community.
69. Eutrophication means an in nutrients in an environment.
70. Major influences in the formation of biomes are: , light intensity, and rainfall.
71. Oligotrophic means " nutrients".
72. Open water far from shore is called the sea zone.
73. Organisms that live on the bottom are called .
74. Organisms that swim freely in the water are called .
75. Succession that occurs in areas that have not previously contained life, such as bare rock, is called succession.
76. Succession that occurs in habitats that have been disturbed by forest fire, logging, farming, or mining is called succession.
77. The region extends from 660 to 6,600 ft..
78. The zone is the open water close to shore.
79. The biome is dominated by evergreen trees, found in the northern parts of North America and Eurasia.
80. The region of the ocean goes down to 660 ft.