Which of the following investigations is an example of the study of an abiotic factor?
answer
investigating how the amount of annual precipitation affects the distribution of a tree species
question
Which action influences the abiotic components of an organism's environment?
answer
Water pollution influences the abiotic components of an organism's environment.
question
Which aspects of a region's climate have the most impact on plants and animals?
answer
Temperature and moisture.
question
True or false? Weather is defined as the prevailing long-term atmospheric conditions in a particular region.
answer
False
Climate is defined as the prevailing long-term weather conditions in a particular region; weather is defined as the short-term atmospheric conditions of temperature, sunlight, moisture, and wind.
question
Which of the following statements about Hadley cells is true?
answer
As warm air rises, air at the top of the atmosphere is pushed poleward and cools.
question
Which location on Earth receives the most solar radiation per unit area?
answer
Equator
question
What are rain shadows?
answer
Rain shadows are dry regions on the leeward side of mountain ranges that result when an air mass releases its moisture on the windward side of the range and then is carried by winds to the leeward side.
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Which desert is caused by a Hadley cell?
answer
Sahara Desert in Africa.
question
What are the two major factors determining the distribution of terrestrial biomes?
answer
temperature and rainfall.
question
Which of these biomes is characterized by little rainfall?
answer
desert
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Which of these is the largest terrestrial biome on Earth?
answer
Coniferous forests are the largest terrestrial biome on Earth. However, as a result of logging, they are disappearing at a very rapid rate.
question
Which biome is characterized by an extensive canopy that allows little light to penetrate to the ground and by the presence of epiphytes?
answer
Tropical rain forest.
Two of the characteristics of a tropical rain forest are the presence of epiphytes and an extensive canopy that allows little light to penetrate to the ground.
question
Which biome is characterized by the presence of permafrost?
answer
Tundra
question
In most cases, the two major climatic factors affecting the distribution of organisms in terrestrial ecosystems are _____.
answer
Water and temperature
question
What is a biome?
answer
type of community with certain abiotic environmental conditions.
Type of ecosystem
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Which of these is characteristic of the photic zone of a freshwater biome?
answer
The presence of algae.
"Photic" means light, and light encourages the growth of photosynthetic organisms.
question
The benthic zone of aquatic environments is defined as the _____.
answer
substrate at the bottom of the body of water
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The _____ biome is the largest of Earth's biomes
answer
Marine
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A(n) _____ is a region where fresh water and salt water mix.
answer
Estuary
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Aquatic biomes can be distinguished by chemical characteristics such as dissolved oxygen content and salinity and by physical characteristics such as water flow.
answer
Freshwater aquatic biomes include lakes, rivers, and wetlands with salinity less than 1%, whereas oceans are marine biomes, with an average salinity of 3.5%. The salinity of an estuary can range from less than 1% to over 3.5%, depending on river flow, tides, and proximity to the ocean. Of the freshwater biomes, streams are marked by their current, whereas lakes and wetlands are standing bodies of water.
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