What are two factors that ultimately decide what organisms can live in an area?

Crossing over and independent assortment are important activities that occur during meiosis. what is the significance of these activities

Ineed a little . why do you think there is a basic difference between the kinds of fertilization most common in aquatic and terrestrial animals?

Hey everybody, i have another biology question. by what reproductive mechanism does a haplontic animal grow? initially mitosis, then meiosis completely by mitosis completely by meiosis initially by meiosis, then by mitosis