Primary succession occurs when vegetation occurs in a place for the very first time, i.e there was no vegetation there before.
The causes are:
-Erosion
-Physiography
-Elevation
Answer:
C
Explanation:
most of them drink their blood
Answer:
cells that should not invade other tissues do invade other tissues
Explanation:
Answer:
16 pg at the end of S
16 pg at the end of G2
Explanation:
A cell has 8 pg of DNA per nucleus in G1.
During S phase the DNA replicates, so every nucleus will contain double the normal amount of DNA that was present in G1. Therefore, at the end of S each nucleus would have 16 pg of DNA.
During G2 the cell continues growing and preparing for mitosis, but DNA content does not change: there are still 16 pg per nucleus.
