a natural phenomenon that maintains Earth's temperature range
100
A wolf pack hunts, kills, and feeds on a moose. In this interaction, the wolves are
Predators
100
A series of somewhat predictable changes that occur in a community over time.
Ecological Succession
100
A layer of permanently frozen subsoil found in the tundra
Permafrost
100
Organisms living on, or in, rocks and sediments at the bottom of lakes, streams, or oceans.
Benthos
200
How does an area's weather differ from the area's climate?
Weather is the area's day-to-day conditions and climate is the areas' average conditions.
200
A symbiotic relationship in which one organism is harmed and another benefits is
Parasitism
200
The first species to arrive or colonize a barren area.
Pioneer species
200
Which two biomes have the least precipitation? \
A) tropical rain forest and temperate grassland
B) tropical savanna and tropical dry forest
C) tundra and desert
D) boreal forest and temperate woodland and shrubland
C) tundra and desert
200
Which ocean location would contain phytoplankton?
Photic zone
300
Situation in which heat is retained in Earth's atmosphere due to accumulation of (BLANK)
Greenhouse gases
300
An organism's niche is
The range of physical and biological conditions in which an organism lives and the way it obtains what it needs to survive and reproduce.
300
A succession that occurs in an area where remnants of a previous ecosystem, such as soil, remain
Secondary Succession
300
Dense forests of conifers along the northern edge of the temperate zone, also called boreal forests.
Taiga
300
A special kind of wetland, formed where a river meets the sea
Estuary
400
The tendency for warm air to rise and cool air to sink results in
global wind patterns
400
Any necessity of life, such as water, nutrients, light, food and space.
Resource
400
Primary succession would most likely occur after
A lava flow
400
Which landforms are not classified into a major biome?
A) prairies
B) mountain ranges
C) coastlines
D) islands
B) mountain ranges
400
Freshwater ecosystem that often originate from underground sources in mountains or hills are
rivers and streams
500
Which climate zone receives the most direct sunlight year-round?
Tropical
500
No two species can occupy the same niche in the same habitat at the same time
Competition Exclusion Principle
500
What is one difference between primary and secondary succession?
Secondary succession begins on soil and primary succession begins on newly exposed surfaces.
500
The North Pole and the South Poles are
A) classified as tundra biomes
B) not home to any animals
C) not classified into major biomes
D) part of aquatic ecosystems
A) classified as tundra biomes
500
Estuaries are commercially important because
fish species that people buy and sell live in estuaries