Simple. Air has mass. And if air has mass it also has weight. You can feel air when the wind blows. Or do an experiment. Weigh an empty container. Then pump it to a vacuum. Weigh it again. The difference is the weight of the air inside.
Yes,oxygen-rich blood is carried through pulmonary arteries from the lungs to the heart.
The first step of DNA replication is the separation of the two DNA strands to create a replication bubble. DNA Helicase is what breaks the hydrogen bonds joining the two strands, allowing it to unravel.
<span>The answer is A. This is because the P53 gene is involved in a cell cycle regulation and is thought to hold the cell in a particular phase until DNA defects are repaired. </span>
Answer:
C
Explanation:
Abotic is a non-living thing A) Contains plants B) Bass are fish they are living
C) is a mesurement non living D) Dragonflies is a living inesct
