Answer:
A phosphate backbone is the portion of the DNA double helix that provides structural support to the molecule. DNA consists of two strands that wind around each other like a twisted ladder. Each strand has a backbone made of alternating sugar (deoxyribose) and phosphate groups.
Their weights in pounds are 5, 7, 10, 11.
Hormones because if you think about it. Vertebrates must have backbones and mammals have them. And, humans are basically mammals. And the glands secrete hormones.
<span>The determining factor in how well a patient is able to compensate for loss of blood in usually related to how rapidly they are bleeding. The ability or the lack of ability to compensate for blood loss is controlled by a patient's cardiovascular system, but the rate of blood loss is key.</span>