Rocks, granite, basalt, elements
Answer:D
Explanation: The pulmonary air sacs of birds only permit a unidirectional flow of air through the lungs. Unidirectional flow means that air is inhale and exhale through one trachea alternatively. This means the bird lungs only receive largely fresh air which has a high oxygen content during inhalation and do not receive fresh during exhalation. While air flow bidirectional in mammals.
A
Explanation:
everything else finds or eats food that was made otherwise.
Answer: C
Explanation: C is the most logical. D is technically true, but this answer is talking about her position on Earth, not in space. As Earth rotates and revolves, constellations will move throughout the year in a pattern.
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