Name a blood disease that shows too few red blood cells

Which are forms of nitrogen that are usable by humans

The body is protected against harmful flu viruses by

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.