Anatomy is the branch of science in which the body structure of an organism is studied.
Comparative anatomy is a sub branch of Anatomy in which the body structure of different organisms (including plants and animals) is assessed and studied to understand the physical changes undergone during the process of evolution.
Generally, similar body structures of different species is compared to understand the adaptive changes that they have undergone during the process of evolution.
The independent variable is the type of food available.<span>The dependent variable is the frequency of each type of beak (or number of birds with each beak type)</span>
Out of the choices given, the reason why Kathy's body feels sore and she has pain in her limbs after vigorously exercising is an accumulation of lactic acid in the muscles of her limbs. The correct answer is A.
