Which of the following adaptations is typical of marine mammals?
The ecosystem is the lowest level of the biosphere hierarchy to include _______.
The marine biome _______.
A portion of grass in a prairie ecosystem was destroyed by wildfire. What will most likely happen to the population of bison that feed on the grass?
Which of the following changes in deciduous forests occurs in the winter?
Why are plants in the alpine biome typically low growing?
A recent study has shown an increase in the number of predators in an ecosystem. Which of the following is a possible cause for the growth?
The taiga biome has three distinct seasons, while the alpine biome has only two.
Which of the following adaptations enables deciduous trees to produce more food?
The sun is the ultimate source for energy on the Earth.
Human impacts on biomes are best characterized by _______.
A large portion of precipitation in the rainforest occurs as a result of _______.
Carbon in the ocean originates from the atmosphere.
Biomes on Earth have exhibited changes throughout history that have been caused by a variety of factors. Over the past 50 years, the amount of tropical rainforest acreage found throughout the world has decreased from 14.8 billion acres to 8.6 billion acres due to deforestation. What factor is likely most responsible for the changes observed in the world’s rainforests?
How are the carbon, oxygen, and nitrogen cycles vital to sustaining life on Earth?
Which of the following is a characteristic differentiating tropical and temperate rainforests?
Vines most successfully compete for sunlight in tropical rainforests by _______.
Which of the following adaptations helps alpine animals survive the cold winter?
Deciduous forests can only be found in North America.
How is nitrogen returned to the atmosphere during the nitrogen cycle?
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