If two similar flashlights shine on a wall from the same distance, the spot on the wall becomes brighter. this is due to light wave a) absorption b) diffraction c) constructive interference d) destructive interference

Which event would lead to primary succession of a forest?

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).

Several billion years ago which gas was the least prevailant in the atmosphere