Organisms that make their own food are called __________________.

Where does all the energy originate from in a food web?

In this food web, which organism has the greatest number of food sources?

A certain type of mite is a parasite of honeybees. Which statement best describes the relationship between the mites and the bees?

The population size that the environment can sustain.

A type of relationship when one species uses another species as a food source; this usually ends in the death of the organism

Biological interaction between two species that use the same resource.

Biological interaction when one organism uses a host organism to obtain nutrients

The variety of living organisms in an ecosystem

Organization of the environment have a specific order. Which shows the correct order?

Aphids are tiny insects that live on and eat the leaves of plants, removing vital nutrients from the plants.

If a scientist in New Zealand was studying how a group of herbivores interacted with a group of omnivores, and all of their abiotic surroundings, what level of ecology would she be studying?

Honey guide birds alert and direct badgers to bee hives. The badgers then expose the hives and feed on the honey first. Then, the honey guide birds eat as well.

Tapeworms reside in human intestine and take nutrients from the human

Vines grow on a tree. The vines get light but the tree is not affected. What kind of relationship is this?

The number of pythons found throughout Everglades National Park has increased in recent years. These huge snakes are not native to Florida and are believed to have been released into the wild by pet owners. Wildlife biologists have initiated attempts to capture and remove these pythons. Which statement best explains the biologists’ reason for removing these pythons from the Everglades?

Predator population lags behind prey population because......

___ states that two species cannot exist together if they compete for the same resources. One will either die out or migrate, or they will adapt to separate resources.

What does the term carrying capacity describe?

Food, water, sunlight, shelter, and space are that keep populations from growing exponentially are called...

When does the yeast population shown in the graph reach its carrying capacity?

A student studies the data for the population size of birds in an area over time. The student claims that the birds never exceeded their carrying capacity and displays this graph in support of the claim. Which two statements below are true about the student's claim?

Which of these best explains why mosquito populations show an exponential increase followed by a die off on a seasonal basis with a regular pattern?

The Great Lakes region is a major source of fresh water and home to a diverse group of plants and animals. Which of these factors could disturb the stability of the ecosystem?

A species of rabbit lives in a meadow where grass plants are readily available during summer months. The rabbits do not stray far from the meadow because the plants supply food and protection from predators. One summer, a fire destroys the plants in the meadow. As a result of the absence of plants in the meadow, the rabbit population will probably

A laboratory investigation examined the growth rate of fruit flies in culture jars over time. The fruit flies were grown in an artificial medium containing nutrients and moisture. They were enclosed in a culture jar of a defined size. Initially, there were ten fruit flies in the experiment. The population reached 75 over the course of four weeks. However, after eight weeks, the population size leveled off and then decreased. Survival of fruit fly larvae declined after eight weeks. Which 3 hypotheses are supported by the information in this scenario?

Global mean sea level has risen about 8–9 inches since 1880, with about a third of that coming in just the last two and a half decades. The rising water level is mostly due to a combination of meltwater from glaciers and ice sheets and the thermal expansion of seawater as it warms. Changes in the sea level are also impacting the coastal ecosystems. Select 3 of the ways sea level rise can impact the stability of coastal communities.

A graph showing the species diversity for a community in response to different levels of disturbance is shown above. Choose 2 statements that support the graph.

The mouse population of an area decreased last year. Which abiotic factor would explain the population decrease?

In 2010, an area in the Gulf of Mexico was the site of the worst oil spill in United States history. The Deepwater Horizon oil rig caught fire, sank, and spilled over 200 million gallons of oil into the surrounding waters. Prior to this event, the leaking of oil into the Prince William Sound from the Exxon Valdez off the coast of Alaska in 1989 was the worst oil spill in US history. In order to assess the damage done to the local ecosystems in the Gulf of Mexico, how would biologists best organize the data?

Biologists in Louisiana have become concerned about cadmium levels in the water near New Orleans and the probability that frogs will die out. They performed an experiment on bullfrog tadpoles to determine how toxic cadmium is to bullfrogs. Suppose a small river with a population of 10,000 frogs becomes polluted with cadmium to a level of 3 mg per gallon per day. About how many bullfrogs would be expected to die?

Forests throughout the U.S. are under increasing development pressure. Habitat fragmentation occurs when the natural habitat is interrupted and partially removed. This occurs when houses, lawns, driveways, and other infrastructure are constructed. This can have consequences for the forest biodiversity. Losing forested land impacts life on Earth in many ways as well as having consequences for Earth's climate. Evaluate the potential solutions below and select those that can reduce the impacts of habitat fragmentation. Select ALL that apply

European frog's-bit is a free-floating plant with clustered heart-shaped leaves. Resembling small water lilies, frog's bit has white flowers with three petals and yellow centers that bloom in the summer. European Frog's-bit is native to Europe but was introduced to North America in the 1930s as an ornamental pond plant. It is one of eleven invasive aquatic species identified in Maine law as illegal to import, sell, and transport. What is a way to prevent its spread in Maine lakes and ponds?

80% of Australia’s land area is managed by farmers, indigenous communities, and other private land managers. As a result, effectively protecting Australia's environmental resources requires managing environmental assets on private land, and engaging landowners in this effort. Australian dairy farmers have taken the lead in environmental self-assessments and restoration and preservation of the land and water resources. Efforts have been made in the last several decades to preserve and restore Australian lands by dairy farmers. Efforts have included all but one the following techniques. Identify the technique that does not help with restoration or preservation.

The graph illustrates what has happened over an 8 year period, when non-native Nile perch were introduced to Lake Malawi in Africa. Environmental factors remained the same during this period (i.e., temperature, pH, water levels, etc.) Based on the data, what recommendation would you make to African biologists?

This chart shows the annual catch statistics for the red grouper for the state of North Carolina during the 1990’s. Red grouper begin their lives as females, and the largest fish change sexes to become male during mating season. Only large females' mate with these males and lay eggs. You are a fisheries biologist for the state of North Carolina. You are charged with protecting the fish population, while also keeping professional fishermen from losing their jobs. Based on the chart above, what would you conclude and what would your solution be?

This food web shows the flow of energy through a coastal Maine ecosystem. Assuming the phytoplankton has 100,000 joules of chemical energy, what can you infer about the amount of energy available to the other trophic levels? Choose 3.

Analyze the pyramid representing the energy flow through an ecosystem. Select the 3 phrases that accurately describe the flow of energy in this ecosystem according to the image here.

This picture shows a food web for a forest ecosystem. Evaluate each of the choices and select ALL of those that include ONLY secondary consumers.

Consider the Canyonlands food web. Evaluate each of the statements provided and select 3 that apply.

Examine the model of the carbon cycle. Select ALL of the processes that return carbon compounds to the atmosphere.

According to the table, what is the optimum temperature for the production of glucose in plants?

A population of green iguanas lived on a tropical island. Originally, most of the iguanas had feet without webbing between their toes and a long round tail. A few iguanas had webbed feet and a short, flat tail. As the years passed, the island became smaller and smaller because of flooding. Even the land areas were dotted with ponds and pools. The iguanas had a hard time finding the food they normally ate. To survive, the iguanas had to swim from island to island to find food. How would you expect the iguanas to look many years after the island flooded and food became harder to find?

Wildfires are frequent In the Great Basin shrub steppe. Every time there is a fire outbreak, much of the natural vegetation is destroyed. What is the MOST LIKELY impact of fire on this ecosystem?

In a drought, sufficient water is not available for the uptake of water into trees. This directly affects the process of _____________________. Without this process, ample oxygen is not placed into the atmosphere for living things to undergo _______________________.

A team of scientists examining the effects of drought conditions on fish populations assembled the data shown. The data are collected from automated stations that monitor water levels in a stream. The scientists suspect that one of the automated stations may be malfunctioning. Based on the data shown, which monitoring station is most likely malfunctioning and reporting erroneous data?