HURRY PLZ What is the basic processes that go on in nature that sustain people and other species that we depend upon?

biological services
human services
biosphere services
ecosystem service

Which of these best describes what occurs during cytokinesis? a) the chromosomes are separated b) the cell begins to divide by replicating the chromosomes c) the cytoplasm is divided between the two new daughter cells d) the nucleus opens to allow the chromosomes to enter the cytoplasm

This is collection of data made by comparing objects in standard units. in science, the units are metric.

Explain how mendel kept his pea plant from self pollination