It is because leaves are the main users of photosynthesis in a plant. The sunlight seeps into the leaves, and the leaves transform the sunlight's energy into sugar; their food.
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Answer:
a lack of resources would most likely decrease a population size because it will limit growth and decrease survival rates. There will also be more competition. 
Explanation:
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Answer:
A. Thalamus
Explanation:
There are two large ovoid organs called the thalamus, which form most of the lateral walls of the third ventricle of the brain. A variety of receptors transmit signals from the thalamus to the cerebral cortex. Thalamus is anatomically situated adjacent to the midline third ventricle in the brain.
 
        
             
        
        
        
Answer:
Thyroid gland
Explanation:
Parathyroid glands are the endocrine glands and are four in number. One superior and one inferior parathyroid glands are attached to each lateral lobe of the thyroid gland. These glands are found embedded in the tissues of the lateral lobes of the thyroid gland. During the removal of thyroid glands in patients, parathyroid glands may be mistakenly removed.
 
        
             
        
        
        
Answer:
9 years 
Explanation:
Boa constrictor: 30 years
 Boa constrictors are native to North, Central, and South America, mainly dwelling in rainforests. The lifespan for the large, heavy-bodied snake averages about 20 years in the wild, but living in captivity can increase that by 10 to 15 years.