The science part because the science is particularly of science
Answer:In biology, a key idea is that structure determines function. In other words, the way something is arranged enables it to play its role, fulfill its job, within an organism. Structure-function relationships arise through the process of natural selection.
Answer:
A
Explanation:
The effective nuclear charge refers to the attraction that a particular electron in its orbit feels for the nuclear charge. Across the period, there is an increase in nuclear charge without any corresponding increase in the number of shells. Hence the effective nuclear charge increases as outermost electrons feel the attractive force of the nucleus all the more. However, down the group, the increase in nuclear charge is counteracted by increase in the number of shells. The effective nuclear charge then remains fairly constant down the group.
