<u>Answer:</u>
Yes,We live in the Cenozoic era, and scientists know more about this era and epochs.
<u>Explanation:</u>
This is because the cenozoic period is one of the three main periods of earth's history which began about 66-million years ago, lasting to the present. It is the latest or the current era of life. In this era, the rock layers are preserved more and destroyed in much lesser degree as compared to previous eras.
The Cenozoic Age is often recognized as the Mammals age because many species of large animals have been annihilated, enabling the preservation and proliferation of smaller creatures as their hunters no longer existed.
Answer:
A population ecologist uses many terms while writing his case study. Match each term to its definition.
an indication of the number of individuals of a population and the area that they occupy
population density
an increase in the number of individuals of a species over a period of time, expressed as a percentage
growth rate
the number of live births per 1,000 organisms of a species in a year
Birth rate
the number of deaths per 1,000 organisms of a species in a year
death rate
Explanation:
All are correct. Ribose has an alternating sugar (ribose) as it’s backbone, it is found in the cytoplasm, and it contains uracil instead of thymine.
If you mean reliability for say an experiment.
1. Detailed procedure of the experiment should be published. How many samples were tested? List of the equipment that were used and justified explanations of the process. These are important in order to prevent things like conspiracy or oversimplified test (only using a small number of sample).
2. Experiment should be done not only by one particular expert, but lots.
If for example, Professor ‘A’ makes the hypothesis, he should not be the only one who does the experiment. Even if he has hundreds of assistant, it may not be fair, as bias may play a significant role. In order to reduce a factor called bias, other expert (with at least the same qualification) should take part in the experiment.
<span>3. </span>A wide variety of ‘sample’ (in psychology would mostly be animal, or human in some case) <span>must be tested. </span>It is important to remember that each person is unique while the world consists of 6 billion people. Therefore by testing a group from the same place or background might not be enough. Things like culture/background, physical condition or surroundings need to be put into consideration.
These 3 factors are very important in order for the word ‘reliability’ to be awarded. They will also be beneficial in terms of keeping us from having any knowledge that may lead us astray. Remember that knowledge comes from a hypothesis, and for a hypothesis to be approved; it needs to be tested first by experiments. Those 3 factors would be needed to increase reliability.
