All the populations living and interacting within a particular geographic area make up a biological (or biotic) community. The living organisms in a community together with their nonliving or abiotic environment make up an ecosystem.
True ..In animals, the female mitotic sequence produces only one ovum; the other three haploid cells become "polar bodies".
Montreal Protocol is the correct answer I think
15 years for scientist to classify an area's weather as its climate.
