Answer: The statement that best describes evolution is " It is the change in heritable traits in living populations over successive generations."
Explanation: HOPE IT HELPED :)
Pollen tube growth is one of the most fascinating—and essential—phenomena in the life cycle of flowering plants. After a compatible interaction between pollen grains and the stigma surface, the pollen germinates and forms the pollen tube, which grows through the stigma, style, and transmitting tract to deliver the sperm cells to the ovule."
2) Although pollens of many species germinate in simple aqueous media, stigmas do not provide satisfactory sites for the germination of most foreign pollen... Stigmas not only provide the proper conditions for the germination of pollen from their particular species, they actively inhibit the germination of pollen of many unrelated species.
Two main ways. Free elections, casting your vote for the candidate supporting your goals.
And second, lobbying the sitting government.
