What is the name of the organic molecule modeled below? A propane B propene C propyne

Hedgerows have created a new ecosystem within britain’s a. farms b. cities c. forests d. industrial areas

Compare the parts of a cell and the cell as a whole to another common nonliving system (i.e., a car, a city, describe the parts of a cell and their primary function.

How do the sperm cells get from the stigma to the ovules? a. they slide down the petals to the bottom of the flower. b. they travel through pollen tubes. c. they travel along filaments. d. insects carry the sperm cells from the stigma to the ovules.