A longitude of a wave is a type of wave that transfers energy to the direction of wave motion?

What did not occur in the proterozoic eon a)the oxygen levels increase greatly in the atmosphere, b)the emergence of the eukarya , c)muti cella’s eukaryotic organisms began to diversify, d)anaerobic bacteria kept thriving with more oxygen

Individuals do not compete directly for resources, but are prey for the same predator

How does secondary succession differ from primary succession?