The chart below shows some events in Earth's history and the primary sources of information which were examined to date the even
ts. Earth event
millipedeappears
land mammals
appear
rodents
appear
insects
appear
Primary source of
information
fossil
atmospheric
gases
history
books
green
plants
Which of these Earth events was dated using the most valid and reliable source of information?
O millipede appears
O land mammals appear
O rodents appear
O insects appear
The event that was dated using the most valid and reliable source is millipede appears.
<h3>What is a reliable source?</h3>
In science, reliable sources include those that provide strong evidence to prove a hypothesis is false or true. The most common reliable sources in science are:
Data that was collected from experiments using the scientific method.
Observations that are consistent.
Peer-reviewed articles about a phenomenon.
Evidence such as specimens, fossils, rocks, etc.
Based on this, the event that was dated using the most valid and reliable resource is the millipede appearance because this event was dated using fossils, which are a type of reliable source in science. Moreover, other sources such as history books or green plants are not reliable.
A positive finding means that antibodies were found in the patient’s blood. Antibodies are made when you have a disease in order to help fight off the disease. Therefore, if you have antibodies for a disease, you have or had that disease (Or were vaccinated). Hope it helps :)
