4th ELA Quiz A5 RST

Part A
What does the word "opportunistic" mean in the sentence? The Arctic fox is an opportunistic eater.

• Eats only plants

• Hunts for prey during specific hours

• Takes advantage of available food sources

• Shares food with other animals

Part B:

Which statement from the article best supports the answer to Part A?

• "Its diet includes small mammals like lemmings, birds, fish, and even carrion."

• "During the summer, the Arctic fox builds dens in rocky areas to stay cool."

• "Its short ears and snout minimize heat loss, while its furry tail acts as a blanket."

• "By preying on rodents and scavenging remains, it helps maintain balance in the food chain."

Part A
What is the main way the Arctic fox survives the freezing tundra temperatures?

• It stays active throughout the day to generate heat.

• It changes its diet during the winter to conserve energy.

• It has physical adaptations that retain heat and provide camouflage.

• It migrates south to avoid the coldest months.

Part B
Which sentence from the article best supports the answer to Part A?

• "Its dense, multi-layered coat changes color with the seasons."

• "Food can be scarce in the tundra, so the Arctic fox is an opportunistic eater."

• "During the summer, the Arctic fox builds dens in rocky areas to stay cool."

• "As temperatures rise, the tundra is shrinking, and competition with red foxes is increasing."