Answer:
Doubling time increasing birth rate greater birth rate than death rate
Step-by-step explanation:
The factors that have contributed to Earth's population growth include:
1. Doubling time: The doubling time refers to the amount of time it takes for a population to double in size. If the doubling time is shorter, it means that the population is growing at a faster rate.
2. Increasing birth rate: A higher birth rate means that more babies are being born compared to the number of people dying. This leads to population growth.
3. Greater birth rate than death rate: When the birth rate exceeds the death rate, the population increases. This occurs when more individuals are being born than are dying.
In summary, Earth's population growth is influenced by factors such as the doubling time, increasing birth rate, and having a greater birth rate than death rate. These factors contribute to the overall increase in the world's population over time.