According to the Big Bang theory, the universe was once very dense and is now expanding.
the first answer as blood needs to be oxygenated to be passes round the body then when its deoxgenated it will return to the heart to be pumped around the body again
Statement D best describes the difference between the way plants and animals obtain energy.
<em>the correct option for this is B>></em>
Answer: The answers are fossil records, DNA evidence and case studies
Explanation
