What is formed during the double fertilization process to help the sperm reach the egg in the ovary? 1.polar nuclei

2.stamen

3.stigma

4.pollen tube

What best describes the structure of the declaration of independence?

Which statements explains what the fossil records indicates? check all that apply. a) earth is 4.5 billion years old b) many organisms have become extinct c) mammals have always existed on earth d) mass extinctions have occurred several times on earth e) the amount of water on earth has decreased over time?

Which measurement unit represents volume? liter kilometer square centimeter centigram