Science 8 Midterm

Energy flows in a food chain as one organism consumes another for food. What happens to this energy as it moves up the food chain from one level to the next?

In a forest ecosystem, 24 gray wolves live together. These 24 wolves make up a __________________.

Bison are grazers, living in herds that migrate in search of better pasture. Bison live in _______________.

Which of the following statements is true?

Sewage that ends up in the waterways can increase algae growth because it _________________.

Ice ages can cause the extinction of animals because of the lack of _________________.

Which product can you NOT recycle?

Which of the following is a conceptual model that represents that flow of energy through an ecosystem?

a lack of food that lasts for centuries can lead to animal _____________.

Mr. Seibert lives in a biome that is very similar to a grassland. Trees spot the landscape of this biome. This biome has seasonal rains and stays warm year-round. What kind of biome does Mr. Seibert most likely live in?

Humans use many resources from ecosystems. Which of the following is a food resource that humans use from a river ecosystem?

Which of the following is an ABIOTIC factor?

Which of the following is a source of pollution in the environment?

Plants in the _______________ are adapted to very short growing seasons. The summers only last for about six weeks. So, plants in this biome flower as soon as the weather warms. Most are pollinated by insects.

Where is the tropical rainforest biome found?

Which of the following ecological levels of organization includes abiotic factors?

Dams are barriers that prevent the flow of water. They are created to provide flood control, recreational areas, water for irrigation, and hydroelectric power. Although dams serve many important purposes, they can also have a negative impact on the environment by ___________________.

The enforcement of hunting regulations are conservations measures that promote the ___________________.

Decomposers are organisms that ________________.

An organism that makes its own food is known as a _____________.

Sunlight --> Rose --> Honeybee --> Skunk --> Eagle

Which of the following is a secondary consumer in the food chain shown above?

A population in an ecosystem cannot grow indefinitely. There are limiting factors in each ecosystem that keep a population within a certain size range. Which of the following is most likely NOT a limiting factor for a population of deer in a forest ecosystem?

Which of the following biomes receives at least 50 inches of rain per year, is warm year-round, and is usually found near the equator?

Which of the following is a living factor in an ecosystem that could limit the size of a raccoon population?