Comparative anatomy: It is the study of determining the differences and similarities in the structural anatomy of different species. It helps in determining the phylogenetic relationship among the primitive and modern organisms. Thus the evidences obtain from such studies can be used to determine the age of earth.
Fossil evidence: The fossil is trace evidence of dead animals or plants that are preserved under the sedimentary rocks. The evidences of traces can be looked for evolutionary development. This development can be compared with the history of the earth.
Molecular clocks: The average rate at which the genome of the species accumulates the mutations that can be used to examine the divergence of evolution. The rate of evolution can be examined to know how old the species was hence, it will help in determining the age of Earth.
Biological evidence of the age of the earth includes fossil evidence, comparative anatomy and molecular clocks. The correct options among all the options that are given in the question are the second, third and fourth options. I hope that the answer has come to your help.
This statement is true because this statement tells us a very rational point of view as well as a fact that the growth of population increases very quickly for a certain point then after that it growth drops to zero.
The reason for the drop in the growth to zero is due to the many factors which is explained by the term "Carrying Capacity of Environment".
Carrying Capacity of an environment is very crucial for the people living in that environment. It is basically measure of the ability of the ecosystem to sustain itself by providing basic needs to maximum number of the human beings. The basic needs include shelter, food, water etc.
When a carrying capacity is reached, then its means that the maximum people are getting basic needs from the ecosystem. Then further increase in population results in the deficiency of the resources for food, water, shelter etc so, as a result that result in the decrease of population due to competition of survival and other factors.
