The evolution of aerobic respiration both oxygen and carbon

The evolution of aerobic respiration ___ both oxygen and carbon dioxide levels in the biosphere. stabilized eliminated increased decreased DNA sequencing data suggest that evolutionary changes are related to an accumulation of: index fossils. vestigial organs. convergent structures homologous structures changes in DNA nucleotide sequences Who originally published the idea that food supplies, which sustain animal populations, have the capacity to increase arithmetically? Charles Darwin Jean Baptiste de Lamarck Aristotle Alfred Wallace Thomas Malthus Which best describes the effect of positive assortative mating in a population? It increases homozygosity. It changes allele frequencies. It causes natural selection. It produces more mutations each generation. It stabilizes genotype frequencies. Which is an example of convergent evolution? The adaptation of the leaf into a cactus spine The hind limb bones found in pythons The elongated snouts of aardvarks, anteaters, and pangolins The third molars in the human mouth The development of thorns to protect the plant How was the mechanism of sympatric speciation among hemp nettles in nature verified experimentally? By producing hybrids that were 98% fertile under laboratory conditions By creating hybrids that reproduced through the F_4 generation before dying from hybrid invisibility By producing experimental hybrids that formed fertile offspring with the naturally occurring hybrid By simply creating unique hybrids under laboratory conditions By producing experimental hybrids that could reproduce successfully with both parent species

Solution

Option 1st is correct. During origin of life oxygen gas was absent so anaerobic respiration was preferred the most. After formation of oxygen gas, there were nature need to establish a balance between the produced oxygen gas and its utilization. Option 2nd is correct. DNA nucleotide changes bring changes in individuals and that cause the evolutionary changes. Those changes can count by DNA sequencing. Option 5th is correct. Thomas Malthus assumed the statement and he found that there is a linear relation between food supplies and animal population. Option 1st is correct because partners mate on the basis of their similarity and that brings homozygosity. Option 3rd is correct. Option 4th is correct.