<span>In mammals, air enters lungs through tubes called _____, which branch into smaller tubules called _____, which extend out to tiny air sacs called _____.
trachea; bronchioles; spongy tissue
>> bronchi; bronchioles; alveoli
bronchi; alveoli; gills </span>
Answer:
the longer it takes to orbit the sun I hope it helps
Answer:
Cell is the basic , functional unit of life
An atom is the smallest unit of ordinary matter that forms a chemical element .
<span>A positive tropism is a plant's growth response ________ the stimulus.
</span>
Answer: Toward
