The gradual change in a species over time is called a.
mutation.
b.
evolution.
c.
migration.
d.
variation.

Please select the best answer from the choices provided

A
B
C
D

уєѕ нє ℓσѕт ¢σитяσℓ σf нιѕ ρυριℓѕ

answer; being clearly political;

answerthe same historical circumstances;

it might look like that the ideal way to research the health effects of trans fats is through a controlled experimental feeding trial. but these kinds of trial have several important limitations that the researcher must look into:

short in duration (this factor usually checks up on the intermediary risk factors rather than the actual outcomes of the disease)

limited dietary changes

only makes use of healthy participants