To work out the appropriate quadrat size you should: A. Average the number of organisms in each the quadrat until it stays the same/remains similar

B. Throw it over your shoulder and see how many organisms you can include

C. Count the number of organisms in the quadrat as it increases in size until the number ceases to change dramatically

the answer is trees if i'm not mistaken

the answer is "a.) well–developed vascular system."

explanation:

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.

if someone had the list of traits you provided