What are the 2 requirements for photosynthesis​

Sunlight

Carbon Dioxide

Explanation:

Carbon Dioxide and Sunlight together with other requirements such us water and chlorophyll are needed for photosynthesis to occur

Explanation:

sunlight and co2 otherwise it doesnt work

first, the romans stayed isolated because they had to defend their own territories from neighboring cities that were harassing them, like the etruscans. second, once the romans managed to defeat their neighbors, and started to expand their territory, they started to build roads and bridges. finally, now that the romans have covered their territory with roads functioning as highways, they could mobilize their legions faster to assemble larger military units in a specific place.

i dont know but thats a great qusestion