Two trends in the evolution of early humans are… A Increasing hair and decreasing skull volume.

B Increasing arm to body ratio and decreasing height.

C Increasing skull volume and decreasing hair.

D Increasing height and stable skull volume.

i think it is dna, i'm not totally sure but i think it might be.

c: warm water flows from the western tropical pacific toward south america. that should be the right answer! hope it .

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.

there is not 1 highest source of protein, but there are many; meats, fish, poultry, seafood, cheese, eggs, yogurt and milk. the only non complete animal food that is beneficial is gelatin.

sorry if this did not , have a great day!