Crows are clever birds. Scientists have seen them use sticks as tools to pull insects out of tree bark. What have scientists seen crows do?
- ACopy human words
- BSwim to catch fish
- CNest underground
- DUse sticks as tools
Crows are clever birds. Scientists have seen them use sticks as tools to pull insects out of tree bark. What have scientists seen crows do?
Snakes flick their tongues in and out to pick up scents from the air. This helps them find food and sense danger. Why do snakes flick their tongues?
A weather report says: “Today will be cloudy in the morning with sunshine in the afternoon. Tonight, expect light rain.” When is rain expected?
“Scientists classify a tomato as a fruit because it develops from a flower and contains seeds. In cooking, however, it is usually treated as a vegetable.” What does the passage explain?
A patient handout says: “Call the clinic if your temperature rises above 38.5 °C (101.3 °F), if the wound becomes red and swollen, or if you notice any discharge.” Which situation should lead the patient to call?
“Pressure ulcers, also called bedsores, can form when a person lies in one position for too long. Nurses help prevent them by changing the patient’s position regularly.” Why do nurses change patients’ positions?
“The forest fire was finally under control after three days. Firefighters praised the townspeople, who had cleared dry brush around their homes weeks earlier, for saving many houses.” Why did the firefighters praise the townspeople?
“Every year, Grandpa planted one more apple tree. When people asked why, since he would not live to see them fruit, he smiled and said, ‘They are not for me.’” What does Grandpa’s answer suggest?
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