Several types of plant species grew in an empty lot. The city counsel decided to turn the lot into a park and planted grass alone to create a playing field. The ecological factor that was MOST LIKELY affected by the change was the lots .

Biodiversity

Explanation:

In the given question, many species of plant species used to grow in the empty lot. The plant species could have provided a home to many animal species. This lot thus formed a small level of the biological ecosystem which is composed of biodiversity.

This lot was changed to a park by the city council which then changed the ecosystem of the area and the main factor that was affected by this change is Biodiversity.

Thus, Biodiversity is correct.

the answer is:

carbon dioxide

meiosis is the correct answer