Final answer:
Developed countries have lower growth rates due to lower birth rates and lower death rates.
Step-by-step explanation:
In developed countries, lower growth rates are attributed to both lower birth rates and lower death rates. Developed countries tend to have lower birth rates due to various factors such as access to education, healthcare, and family planning services. Additionally, improved healthcare and living conditions in developed countries lead to lower death rates as compared to less-developed countries.
Learn more about Factors contributing to lower growth rates in developed countries