Alejandro wants to find out whether mealworms prefer apples or pears. He places an apple slice at one end of a cardboard box and a pear slice at the other end. He then places 20 mealworms in the center of the box, about 15 centimeters (cm) from each piece of fruit. After several hours, he counts the mealworms on or under the apple, the mealworms on or under the pear, and the mealworms not touching either the apple or the pear. Alejandro repeated his experiment four times. The data are recorded in the table shown below. Which of the following is the best conclusion that Alejandro can make from this data?

• Mealworms prefer pears.

• Mealworms prefer apples.

• Mealworms do not prefer apples or pears.

• Mealworms do not go near apples or pears.

A class wants to find the ideal temperature for plants to grow in a terrarium. If the students set up several terrariums, what should they do to get the best results?

• Plant different kinds of plants in each terrarium.

• Use a light bulb with a different brightness in each terrarium.

• Add different amounts of water to each terrarium.

• Use different fertilizers in each terrarium.

The largest body in our solar system is

• Earth

• The Sun

• Jupiter

• The Moon

Jacob created a diagram to show some of the common characteristics of planets in our solar system. Which characteristic should Jacob write in the empty circle of the diagram?

• Made mostly of gas

• Has a rocky surface

• Revolves around a star

• Is a satellite of another planet

Why are most fossils found in sedimentary rock?

• Sedimentary rocks are not very old

• Organisms live only in areas with sedimentary rock

• Organisms can be preserved in sedimentary rock

• Sedimentary rocks are found only at the surface of the ground

Earth has many types of climate zones. The map below shows the tundra climate zones of the Northern Hemisphere.

Which of the following best describes this type of climate zone?

• It is very hot because it is on the coastline.

• It is very wet because it is below sea level.

• It receives very little snowfall because it is close to the ocean.

• It has very cold temperatures because it is far from the equator.

The heart is an organ of the human body that is mainly composed of muscle. What function does the heart muscle perform?

• Air exchange

• Growth and repair

• Energy production

• Pumps blood

The picture shows the life cycle of a butterfly. Which of the following represents the beginning stage of the life cycle of the butterfly?

• Egg

• Larva

• Nymph

• Pupa

The chart shows the characteristics of four habitats. In which habitat would a black bear most likely be found?

• Q

• R

• S

• T

In some parts of the Florida Everglades, sawgrass can grow thick enough to block the flow of water. Alligators make nests out of the sawgrass and also make travel lanes through the grass. This helps the water flow easily. It also keeps the sawgrass from being completely underwater, which can damage the sawgrass. What relationship is demonstrated by the alligators and sawgrass in the Everglades?

• Alligators destroy sawgrass.

• Alligators feed on sawgrass.

• Sawgrass helps the alligators travel.

• Sawgrass and alligators depend on each other.