Because of __________, ___________, and ___________, Physical Interstellar Travel Is

Q43: Evolution is random.

Q44: Astrobiology is the study of biological life

Q45: A cell's DNA molecules contain its genetic

Q46: The _ molecule is a long carbon-chain

Q47: The Viking landers searched for life on

Q49: The _ split lengthwise and duplicate when

Q50: Choose the correct terms to make the

Q51: _ is the scientific study of the

Q52: The DNA molecules contain six different bases.

Q53: The Arecibo radio message to extraterrestrials contains