Answer:
Mesozoic Era
Explanation:
The "Mesozoic Era" is divided into three periods: <em>Triassic, Jurassic and Cretaceous.</em> During the last period (Cretaceous), which was considered the longest, the extinction of reptiles occurred and the new mammals appeared. This event was also known as the "Cretaceous-Paleogene Extinction Event." Around <em>3/4 of plants and animals died</em>. Such event became significant boundary that laid between the Cenozoic Era and the Mesozoic Era. This made it significant in geologic history.
The ( nitrogenous bases) of dna form the rungs linking the ( base) strands together through ( a base pair)
DNA replication involves synthesis of DNA molecules, while transcription is a process that involves synthesis of RNA molecules. In both processes, DNA acts as template and provides information for synthesis of new daughter DNA or RNA strand.
1. The general trend of human population growth is that the growth rate of population is increasing over the years
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2. Countries of the world differ in birth rates, death rates and age structure of population and this factor explains why population in different countries grow at different rates.
3. Demography is the study of human population in terms of births, deaths etc is called demography.
4. Demographic transition is the shift from high birth and death rates to high birth and low death rates and finally to low birth and death rates. Demographic transition reduces the rate of population growth of a country.
5. Age structure diagram contains data about individuals who belong to the younger age group. Once they become mature they will contribute to population growth and thus studying the age structure gives an idea the trends of future population growth.
