Plzz answer

how are smallpox and cowpox different?
a smallpox is caused by a virus.
b cowpox is infectious only to cattle.
c cowpox is less dangerous.
d smallpox is contagious.

A. Small pox is caused by a Virus

Explanation:

Smallpox is a disease caused by a poxvirus that is transmitted from person to person that causes high fever, characteristic rash, and may kill about one-third of those infected. Smallpox (also called variola) is the only disease that has been completely wiped out throughout the world.

prophase: we can observe the chromosomes to coil up and condense. they become visible. nuclear membrane and envelope disintigrate.s

metaphase: chromosomes align at the center, the metaphase plate. spindle fibers attach to centromeres of the sister chromatids. they meet at kinetochores.

anaphase: sister chromatids are pulled towards each opposing centromere, set on different poles.

telophase: chromosomes are now clustered up only on either sides of the cell. nuclear membranes reform, and a new cell wall forms along the cell plate. this will lead to cytokinesis, the process that divides the cell membrane and forms the cell wall.