Zinc carbonate (ZnCO3is composed of one zinc, one carbon, and three oxygen atoms. What is the total atomic mass of zinc carbonate?

Ais a landform that is formed at the mouth of a river from the deposition of sediment carried by the river as the water flows.

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.

Need with these questions . need the answers in a rush for these questions are the answers i put down are correct or not? ?