If I know the delta u are talking about , it is a mathematical meaning . Both meaning begin with a D just like the Greek letter , which should help u remember
The four postulates of the natural selection include.
1. individuals possessing particular traits are have higher likelihood of surviving and reproducing.
2. different individuals in a population have different traits
3.reproductive and survival rate vary with individuals in a given population.
4. some trait differences are inheritable.
B. Phosphate group, since ATP includes phosphate
It measures the total rate at which photosynthesis or chemosynthesis happens in a system.