What muscles increase the size of the thoracic cavity by elevating the first and second ribs?

4. how does a phospholipid behave in water? the phosphate head does not mix with water; the fatty acid tails do. the phosphate head and the fatty acid tails mix with water. the phosphate head and the fatty acid tails do not mix with water. the phosphate head mixes with water; the fatty acid tails do not.

Aboy with an extra x chromosome probably has which of the following syndromes?

What causes darkening of the skin as melanin production increases