Darwin saw that in order for natural selection to occur you ultimately need some limiting factor that will cause death of the less fit individuals before they reproduce. An example of a these things that cause death could be ...

Vacuole Location Where in the cells are vacuoles located?

Does carbon bond to calcium

Which sequence correctly describes the route sperm take through the human male reproduction system? a. vas deferens, urethra, epididymis b. epididymis, vas deferens, urethra c. vas deferens, epididymis, urethra d. urethra, epididymis, vas deferens

Which finches would be most like the ancestral finch?

What is the Y shaped region that results when the DNA molecule separation

If there is certain virus that attacks a cells mitochondria, what would happen to the cell?

What is the phylum bacteria?

Describe how an active virus works. Describe how a hidden virus works. Include an example of each kind of virus.

Animal cells are bathed in an isotonic fluid, and plant and bacteria cells have a cell wall. What does this protect the cell membrane from?

A river's discharge is generally greatest