Caused by the body clearing out the chemicals that enter through the airways and lungs through tobacco use. Leads to a variety of other conditions like bronchitis, higher risk of bacterial and respiratory infections, emphysema, COPD, and lung cancer
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Answer:a. Retention of five functional digits on the tore and hindimbs
Explanation:
The presence of five digits or pentadactyly on the fingers as well as on the toes makes the primates distinct from other mammals. Also the keratin nails are present on each digit makes these organisms distinct from other mammals.
The five digits on the hindlimbs helps in grip of objects and on toes helps in climbing.
Experimenting. Experimenting is used in all three main branches of science, physics, chemistry, and biology, and is used in all the sub-branches of science, like marine biology, to make discoveries. Without experimenting, all we know about science would be random guesses.
Producers are typically plants, so I believe the correct answers would be 2, 3, 4.
