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Biology
Which best examples why a wood-burning fireplace represents an open system. A. Because the ashes have to be swept away B. Because a fire requires oxygen from the atmosphere to burn C. Because they can be used for cooking D. Because they are not all made out of brick
Which one of the following conditions is an example of resource partitioning? A. Two species of squirrels—one that eats acorns from the branches and one that eats acorns that have fallen to the ground B. Two species of mice—one that eats seeds and the other that eats insects C. Two species of birds that eat fruit from the same tree D. A species of butterfly and a species of bee that pollinate the same flower
Why do we consider DNA to be the blueprint of life?
Of the following options, which is the largest level of classification? A. Order B. Family C. Species D. Genus
What percentages make up glaciers and ice sheets?
How rare is it to die from a tooth infection?
Until approximately what age does the sensitive period last among cats and dogs? A. Two weeks B. Twenty weeks C. Twelve weeks D. Ten months
Why is it important for a cell to be able to turn a gene off?
Alexandra was preparing to go on a hike in the woods. She gathered the equipment she would need and placed it on the counter. By chance, she placed her compass near an electrical outlet. Although the compass was not moving, the compass needle turned because______________________? A. The electrical current in the outlet produced a magnetic field. B. The compass could only be used outdoors. C. The kitchen counter was made of a magnetic substance. D. The kitchen had a microwave oven.
a kite stuck in a tree blowing in the wind has ____ energy
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