Atomic mass is determined by the number of protons plus the number of neutrons
The most common way to get your blood flowing is by exercising, improving your diet, have a hot bath, etc.
It is true that r-related species have a short life span and an early reproduction cycle. R-related species also known as r-strategist have a short and simple life span. Due to their simple life span, their nutrient exchange rate with the environment is rapid. Unlike K-selected species, they have the ability to reproduce at a young age. They reproduce a large number of off-springs, but many of their off-springs tend to die before attainment of their reproductive age.
MRNA = A, C ,G ,U
TRNA = T, G,C,A
