The second part of the mitotic phase, during which cell division is completed by the physical separation of the cytoplasm components into two daughter cells is called

"The second part of the mitotic phase, during which cell division is completed by the physical separation of the cytoplasm components into two daughter cells is called telophase."

Telophase is the last phase of mitosis. The name itself indicates terminal (telo) phase. The chromosomes get to the cell poles and nuclear membranes are formed around each set of chromatids. The actual cell division is called cytokinesis and it starts at the end of the telophase.

This is true. The balance of such abiotic factors as water, temperature, light and air composition are crucial to any ecosystem.

Water- all living beings, whether they are plants or animals need a definite percentage of water to live and remain healthy. Water bodies of the world have more life forms present in them than found on land.

Temperature- All plant and animals are adapted to survive  between a minimum and maximum range of temperature. Distribution of different temperatures in different zones enable a wide diversity of both plant and animal life to flourish.

Light- This is the main source of energy for organisms. Most plants use light energy and transform it into chemical energy in form of complex materials that are the lifeline of animals. Animals directly or indirectly depend on plants for life.

Chemical components.- Carbon, oxygen, hydrogen and nitrogen are elements that constitute 97% of the molecules of life. A balanced supply of the elements either from the air in atmosphere or other sources is vital to life of living beings.