If enough water pressure builds under the surface of the ground, the water can burst through cracks in the surface, forming an)
A. stream
B. lake
C. geyser
D. aquifer

How many copies of each chromosomes should be present in each of the 4 final haploid versions of gamete?

What molecules will be best used to compare different species with the exact same sequence of amino acids? why would two species have the same protein even if the molecules in question is different? (hint: transcription to translation to protein).

What is any method of measuring the age of an object or event in years, such as using atomic half-life?