Earthquakes are usually associated with
a. violent weather
b. faults
c. large cities
d. the east coast of north america

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).

The eruption of a nearby volcano causes a prairie ecosystem to receive a lot less sunlight. which of these is most likely effect on the ecosystem?

Anormal strand of dna is shown below, followed by the same strand of dna after mutations have occurred.