Answer:
cells, tissues, organs, organ systems
Explanation:
This is how these are organized - in terms of smallest to largest.
A virus cannot infect a host cell unless i<span>t's surface proteins fit receptor molecules on the host cells surfaces. And in order to reproduce it must first infect a host cell.
</span>
Cells have a nucleus. The nucleus contains DNA. Chromosomes are inside of the DNA. The DNA carries the gene. Have a good day
Evolution. allele frequencies change so characteristics change and if this is over time it is evolution- "the change over time of allele frequencies"
Well because they need to survive. And whoever gets the most food will grow the biggest and produce the most offspring. This even happens between inter species like ants, an example of this is when the red imported fire and caused the near extinction of the native argentine ant in the United States