Amebas are single-celled organisms that need to obtain food in order to

Three living organisms are labeled in the diagram. What do the rabbit, fungus, and tree have in common?

Which term identifies a group of cells of the same type working together to perform a common function?

The diagram shows graham crackers in a food processor. When the processor is turned on the crackers break into smaller pieces. Which human digestive process is most similar to this activity?

The diagram represents some respiratory structures in three organisms. The labeled structures in these organisms all have a similar function.

What is the main function of the labeled structure in each organism?

One function of the human excretory system is

Which term is used to describe the sum of all the chemical processes in the human body?

Why is an organism that reproduces asexually genetically identical to its parent?

The sequence of diagrams represents the plants present in the same area at different times over a 200-year period following a forest fire.

Which process is best represented by this sequence of diagrams?

The numbers in the drawing represent the number of

Abnormal cell division causes which health problem?

Organisms are classified as producers or consumers according to the way they

The diagram shows a mushroom, a type of decomposer, growing on a rotting log.

Which statement best describes the relationship between the mushroom and the log?

The population of light-colored moths decreases, due to predators. At the same time, the population of dark-colored moths increases, because they are less visible to predators.

Which process is responsible for this type of adaptation over time?

Which adaptation protects dark-colored moths from predators?

What causes infectious diseases in the human population?

A Calorie is a unit used to measure

A community is composed of

The African savanna is a large grassland region with few trees that is hot and seasonally dry. A population of lions and a population of wild dogs living there are most likely to compete with each other for

The diagram represents the process of

The inference that Earth's interior has an outer core and an inner core is based on studies of

Why does the Sun generally appear to rise in the east, move across the sky, and set in the west each day?

Which property of a mineral is tested by scratching it on a glass plate?

The change in the direction of the ray of light as it enters the water is called

Which Moon phase will be seen from Earth when the Moon is at position C?

Approximately how many weeks will it take the Moon to move from position B to position D?

The gravitational force between two objects is most affected by their

Earth's surface has a relatively thin, solid outer shell called the

Which process results in the formation of water on the outside of a cold glass of iced tea on a warm day?

Which graph best shows the general relationship between the temperature of a gas and the speed of the molecules in that gas?

Why was the hurricane watch posted for the coastal areas shown?

Positions 1 through 4 show positions of a hurricane on four different days at 12 noon.

In which compass direction did the hurricane travel from day 1 to day 4?

Which machine is changing the direction of the force being applied by the person?

One hundred milliliters of a liquid was completely transferred from cylinder A to cylinder B. Compared to the liquid that was in cylinder A, the liquid in cylinder B will have

Which model best represents the arrangement of atoms in a solid?

Which model best represents the arrangement of atoms in a compound?

Warm air rising in the atmosphere is an example of heat being transferred by

One can is painted black and the other can is painted white. The cans are placed on a sunny windowsill, and a thermometer is placed in each can to measure the water temperature.

After four hours in the sunlight, the temperatures of the water in the cans will most likely be

As a candle burns, the chemical energy stored in the wax is transformed into

Which principal best explains how this thermometer works?

The diagrams represent the same two magnets placed in four different positions. At which position will the force of attraction between these two magnets be greatest?

The graph shows tidal changes at an ocean beach over a 24-hour time period.

What is the approximate time interval between the two high tides?

How many servings of this food would a person need to eat to get approximately 8% of the recommended daily value of dietary fiber?

The data table below shows the yield of vegetables in a school's garden for three years. The yield is the number of pounds of vegetables harvested. The same number of each type of vegetable was planted every year.

Which statement is an inference?