What term best describes an ecosystem?
connected
separate
large
small
Which of the following is an abiotic factor in an ecosystem?
trees
bugs
sand
humans
Which abiotic factor separates marine ecosystems from river ecosystems?
sunlight
salt
algae
Which sentence best describes a habitat?
Grass uses sunlight to grow.
A mole lives underground.
Bacteria break down dead plants.
Deer eat forest plants.
What is the main difference in rainfall amounts in the grassland ecosystem compared to the tropical rain forest?
In the grassland, rainfall is abundant, while in the forest it is limited
In the forest, rainfall is abundant, while in the grasslands it is limited
In the grassland, rainfall is limited while in the forest it is medium.
There is no difference in rainfall amounts between these two ecosystems.
