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What is percent of natural increase in population in Brazil?
The natural increase in population in Brazil is approximately 0.7% per year, which is calculated by subtracting the death rate from the birth rate. This percentage reflects the rate at which the population grows through natural means, such as births exceeding deaths.
Can the population increase and decrease at the same time?
No, the population cannot increase and decrease at the same time in the same area. The population can either grow through factors like births, immigration, and decreased mortality rates or decrease due to factors like deaths, emigration, and natural disasters.
What are the different ways in which individuals with a particular trait may increase in a population?
Individuals with a particular trait may increase in a population through natural selection, genetic drift, gene flow, and mutations. Natural selection favors individuals with advantageous traits, genetic drift leads to random changes in allele frequencies, gene flow introduces new alleles into the population, and mutations create new genetic variation.
Why are some valleys better for growing crops?
Valleys are often more fertile and have better soil for growing crops because they receive sediment deposits from the surrounding hills and mountains. Valleys also have good water retention, acting like a natural basin that collects water for irrigation. The surrounding hills can provide protection from strong winds, creating a more stable growing environment for crops.
How might Tenochtitlan location have been benefit and hindrance to the Aztecs?
The location of Tenochtitlan on an island in Lake Texcoco offered natural defenses against invasions and potential flooding. It also allowed for easy access to resources through waterways. However, being situated on an island limited available land for expansion and agriculture, creating challenges for sustaining a growing population.
