Answer:
Pandemics occur for two reasons. The first is a change in the infectious agent and the second is in human patterns. Both involve exposing people to agents they don’t have resistance to. Diseases like SARS, avian flu, and the famous Spanish flu all involved a mutation in the virus that resulted in a new disease that no one had resistance too. Examples of the second are when new groups of humans make contact, like small pox amongst native Americans, and possibly the black death.
Explanation:
Answer:
Interphase: Lowest pic, left corner.
Cell appears to be in a normal state.
Metaphase: Left, above Interphase.
Chromosomes are beginning to align in the middle of the cell. Spindles form and begin to attach to their centromeres.
Anaphase: Lowest right pic.
The chromatids are pulled away from each other and brought to different sides of the cell.
Telophase: Above Anaphase.
The genetic material is now in its respective side of the cell, which now begins to split into 2. Nucleic membrane begins to form.
Cytokinesis: Above Metaphase.
The clevage furrow is forming and separating the cytoplasm and other organelles in the cells. When done, this will result in 2 identical cells (unless it's meiosis II).
Carbon Monoxide has 2 atoms total - one atom of carbon (C) and one atom of oxygen (O) chemical formula is CO
Ethylene has 6 atoms total, 2 atoms of carbon (C) and 4 atoms of hydrogen (H), chemical formula is C2H4.
Ethylene has four more atoms than carbon monoxide (6-2) = 4
Ventilation is the process by which air moves in and out of the lungs.Diffusion is the spontaneous movement of gases, without the use of any energy or effort by the body, between the gas in the alveoli and the blood in the capillaries in the lungs.
