3rd Science Quiz A5

Male peacocks have brightly colored feathers and perform elaborate dances. How do these behaviors provide male peacocks with advantages in surviving or reproducing?

• These behaviors help them hide from predators.

• These behaviors scare other animals away.

• These behaviors attract female peacocks for mating.

• These behaviors make it easier to find food.

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Plants in dry desert areas often rely on rainfall to survive, but droughts are becoming more frequent. People are trying to build systems to store rainwater. How will storing rainwater help desert plants?

• Rainwater will provide essential nutrients to help plants grow.

• Rainwater will harm the plants by washing away the soil.

• Rainwater will make the soil saltier, which plants cannot tolerate.

• Rainwater will attract animals that eat the plants.

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Butterflies are important pollinators for many types of flowers. Without butterflies, some plants may not produce seeds or fruit. Which situation will most likely cause a decrease in seed production?

• The butterfly population in the area decreases.

• More flowering plants are planted in the area.

• The flowers are watered more frequently.

• The flowers are exposed to more sunlight.

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People need iron in their diets to help their bodies produce healthy red blood cells, which carry oxygen. People can get iron from foods like meat, spinach, and beans. Which situation will most likely cause a person to feel tired and weak?

• The person eats a diet rich in spinach and beans.

• The person avoids foods with iron.

• The person includes iron-rich meat in every meal.

• The person takes vitamins that contain iron daily.

The box turtle lives in forests and grasslands in the eastern United States. A box turtle's needs include:

A diet of insects

berries and plants

A damp environment for laying eggs

Hiding spots under logs or rocks for protection

Sunlight to regulate its body temperature

A new highway is being built through the turtle's habitat. How will this highway most likely affect the box turtle population?

• More turtles will die because they will lose safe hiding spots.

• More turtles will survive because they will find more insects to eat.

• More turtles will survive because the highway will provide damp areas for eggs.

• More turtles will die because they will find it harder to find sunlight.

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Cane toads were introduced to Australia in the 1930s to control pests in sugarcane fields. However, cane toads quickly spread across the country and began competing with native species for food and habitat. Additionally, their toxic skin can poison predators that try to eat them. Which effects will most likely be caused by introducing cane toads into a new ecosystem? Select the two correct answers.

• Native predators will decline because they are poisoned by the cane toads.

• Native insect populations will grow because cane toads avoid eating them.

• Native species will struggle to survive as cane toads compete for resources.

• The biodiversity of the ecosystem will increase as more cane toads arrive.

• Other predators will thrive by eating the cane toads without being affected by their toxins.

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