Cumulative Exam — Cumulative exam Answers

The following graph is representative of what type of population growth?

Which of the following could cause a habitat change?

All wetlands are considered freshwater ecosystems.

A population’s size is unaffected by the available resource supply.

Coniferous forests evolved due to Earth’s continents assuming their modern configuration.

Which of the following scenarios represents change to an ecosystem brought about by biotic factors?

How can an increase in biodiversity lead to an increase in ecosystem stability?

Phytoplankton would most likely be found _______.

Global climate change is a concern to scientists because it_______.

Small aquatic organisms, such as coral, are the producers of the ocean.

R-selected species have a short life span and an early reproduction cycle.

Which of the following statements about Earth’s cycles is not true?

The largest diversity of plants and animals on the planet is found in one terrestrial biome.

Which of the following about the ozone layer is not true?

Butterflies laying their eggs on milkweed plants occurs at what level of the biosphere hierarchy?

A balance in abiotic factors is vital to healthy ecosystems.

Which of the following statements about erosion is true?

Ozone is formed when _______.

Yellowstone National Park has an average of about 4500 bison living in it. The park covers 3472 square miles. What is the population density of bison living in Yellowstone?

The disproportionately high appearance of polydactylism among the Amish suggests that _______.