Pollen grains are formed in this male reproductive organ at the end of the stamen.

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.

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

How does secondary succession differ from primary succession?