Which of the following is not part of the nitrogen cycle? Nitrogen compounds in the soil

Nitrogen compounds in animal waste

Nitrogen gas in space

Nitrogen in the atmosphere

This is a coral reef ecosystem. many biotic and abiotic factors affect the health of this ecosystem. which set correctly pairs a biotic factor and an abiotic factor?

Which of the following factors would not contribute to allopatric speciation? a) a population becomes geographically isolated from the parent population.b) the separated population is small, and genetic drift occurs.c) the isolated population is exposed to different selection pressures than the ancestral population.d) different mutations begin to distinguish the gene pools of the separated populations.e) gene flow between the two populations is extensive.

Are the brightest stars low magnitude or high magnitude?