L
2.1.4 quiz: chemical reactions and bonding
question 6 of 10
2 points
living organisms contain many complicated molecules. which of these is a
reason that carbon is important in these molecules?

the main thing i would use is bricks because if there is a hurricane, there is a great possibility for the house to still stand. and i would also use plexiglass windows instead of regular windows because plexiglass isn't prone to breaking.

maybe because its impossible for balloons to lift a whole entire house.

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.