Examine the Punnett square below, which represents a dihybrid cross of two rose bushes. RT Rt rT rt RT RRTT RRTt RrTT RrTt Rt RRTt RRtt RrTt Rrtt rT RrTT RrTt rrTT rrTt rt RrTt Rrtt rrTt rrtt How many different phenotype variations are possible in the offspring of these crossed rose bushes? (R = red petals, r = pink petals, T = tall bush, t = short bush)

the index of refraction of the second medium is higher. i just took the test trust me !

b. the carbon cycle ensures living things have a source of hydrogen

a. by using fur or clothes to trap heat energy near the body

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.