Must all ecosystems have quaternary consumers?

Which element forms the basis of all organic organisms a carbon b oxygen c hydrogen d nitrogen

What in scientific term why the salty popcorn causes this thirst

If your client can successfully complete two or more repetitions above the desired repetition range in the last set in two consecutive workouts for any given exercise, the load should be depending on your client's current physical abilities. increased by 1-5% increased by 2-10% increased by 5-15% increased by 10-20% none of these