Which factor do forest and grassland ecosystems most likely have in common?

• the type of climate
• the amount of trees
• The soil composition
• the variety in organisms

Which are the most common ecosystems in North Carolina?

• estuary, grassland, rainforest
• deciduous forest, estuary, ocean
• grassland, ocean, temperate forest
• deciduous forest, ocean, desert

Which terrestrial ecosystem has warm, humid conditions and a large variety of plants and animals?

• estuary
• grassland
• deciduous forest
• tropical rainforest

The American grassland are home to which types of animals?

• elephants, lions, and zebras
• foxes, prairie dogs, and rabbits
• lizards, tortoises, and weasels
• wolves, deer, and bears

Which best describes a freshwater ecosystem?

• an ocean environment with living organisms
• an inland water environment with no living organisms
• an ocean environment with living organisms and nonliving parts
• an inland water environment with living organisms and nonliving parts

Which can be concluded about the trees that grow in a temperate deciduous forest?

• The trees require constant direct sunlight to survive
• The trees grow only during the warm months of the year
• The trees have adapted to survive the change of seasons
• The trees are unable to grow in climates that have constant rainfall

Compared to the large number of plant species found in a forest ecosystem, which best explains why a desert ecosystem is unable to support a greater variety of plants?

• A desert ecosystem is located too high above sea level for most plants to grow.
• There are fewer animals in a desert, which decreases the need for large varieties of plants.
• There is not enough space available in a desert ecosystem for some plant varieties to grow.
• Most plants that live in a desert ecosystem must be able to conserve water for long periods of time.

Which marine ecosystem would be best for organisms that can adapt to both salt water and fresh water?

• Estuary
• Lake
• Pond
• River

Which type of ecosystem best removes pollutants from water?

• forest
• desert
• estuary
• grassland

Which could be a challenge for a small animal living in a grassland ecosystem?

• The frozen ground is too hard to serve as shelter
• The flat terrain makes it easy for predators to spot prey
• The extreme temperatures require thick skin and heavy fur
• The high amounts of precipitation create excess water resources