Answer:
The alveolar walls and capillary walls share a membrane. That's how close they're getting. This allows oxygen and carbon dioxide to readily pass from the respiratory system to the circulation. Oxygen molecules bind to red blood cells as they return to the heart.
Answer:
b
Explanation:
some genes being turned off in warm temperatures
When an object<span> is speeding up, the </span>acceleration<span> is in the same direction as the velocity. Thus, this </span>object has<span> a positive </span>acceleration<span>. In Example , the </span>object<span> is moving in the </span>negative<span> direction ( </span>has<span> a </span>negative<span> velocity) and is slowing down.</span>
Sexual Reproductions (i.e. Meiosis)
In Meiosis you have a crossing over stage in prophase I, which will result in the exchange of genetic material + the random assortment at metaphase 1 and 2 increases the variety.
There is approximately 10 billion different ways that a child can look from a mixture of the paternal and maternal genes due to all the random events that happen in meiosis/ sexual reproduction.
