Answer:
D
Explanation:
hope this helps you to understand:)
The heart<span> is at the centre of your circulatory </span>system, which is a network of blood vessels that delivers blood to every part of your body. Blood carries oxygen and other important nutrients that all body organs need to stay healthy and to work properly. In other words, it supplies oxygen and nutrients to our bodies by working with the respiratory system<span>. At the same time, the </span>circulatory system<span> helps carry waste and carbon dioxide out of the body. Hormones — produced by the endocrine </span>system<span> — are also transported through the blood in the </span>circulatory system<span>.
Hope this helps xox</span>
Answer:
1. Texas A&M University
2. Texas's premier research agency in agriculture, natural resources, & life sciences
Explanation:
Answer: Unzipping of DNA refers to the unwinding of DNA duplex from specific site that initiate the replication process (called origin of replication). Replication of DNA requires a single strand template so that DNA polymerase can add nucleotides in order to make new DNA copy.
Therefore, DNA must unzip so that template strand is available for making new DNA.
