Rosalind franklin used x-ray crystallography to determine that dna was double stranded
Answer:
Explanation:
It is called a double circulatory system because blood passes through the heart twice per circuit. The right pump sends deoxygenated blood to the lungs where it becomes oxygenated and returns back to the heart. The left pump sends the newly oxygenated blood around the body.
Answer:False
Explanation:Fossil fuels are the energy-rich substances
Answer:
i think its like this ok
a) its one of number one so put d) the other number one
Explanation:
there are the one the oly i understand :) hope you help in something
