Answer:
The 3 major observations were:
1. More individuals are produced each generation that can survive.
2. Phenotypic variation exists among individuals and the variation is heritable (through parents' genes).
3. Those individuals with heritable traits better suited to the environment will survive.
Explanation:
Charles Darwin was a British naturalist who proposed the theory of known to everyone as 'The Theory of Evolution' through natural selection.
Answer:
This specimen is also far too old for C-14 dating to be accurate, as well as for any other technique but palaeomagnetic dating.
Explanation:
The second part of the sentence is not accurate, since the remains were dated by uranium-lead dating. Carbon-14 dating measures ages in the tens of thousands of years, and uranium-lead dating measures in the millions to billions of years.
After the Cretaceous–Paleogene extinction event wiped out the non-avian dinosaurs (birds being the only surviving dinosaurs) and several mammalian groups, placental and marsupial mammals diversified into many new forms and ecological niches throughout the Paleogene and Neogene, by the end of which all modern orders had appeared.
Answer:
Correct Answer is Viruses
Explanation:
Viruses are non-cellular entities that consist of a nucleic acid nucleus (DNA or RNA) surrounded by a protein layer. Although viruses are classified as bacteria, they are not considered living organisms. The microbes such as viruses cannot reproduce outside a host cell and cannot metabolize on their own. Viruses often infest prokaryotic and eukaryotic cells that cause disease.
