Fraternal twins are formed when two different sperm fertilize two different eggs. how do you think physical characteristics, such as hair color and facial features, differ in fraternal twins compared to identical twins? how does the way each type of twins develop contribute to these differences?

Identical twins will have the e physical features such as hair color and eye color, because they were formed from the exact same egg and sperm. Fraternal twins are formed from two different eggs and sperm, so those twins will look different from each other.

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a gas, having a molecular weight of 13 kg/kmol and a kinematic viscosity of 0.25 cm2/s, flows through a pipe 0.25 m internal diameter and 5 km long at the rate of 0.4 m3/s and is delivered at atmospheric pressure.