The observations charles darwin’s work after he returned home from his voyage and studying the selective breeding of pigeons prompted him to ask which question

i believe it is c: genes for body color and wing size are inherited separately from each parent.

blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. as the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs where it is oxygenated.

high growth (apex)