Answer:
The answer is D and E.
Explanation:
I took this test and got 100 percent.
1. Sedimentary rock
2. Trace
For number three, I'm sorry, but I'm not sure.
I hope this helped !!
According to Mendel's Theory of Genetics all 4 options arepossible´-
RR, Rr, rR,and rr,
Answer: B
Explanation:
The T helper cell needs to acttivate the T cyctotoxic cell in order for the Tc cell to go do its work.
Once the TC cell is active it interacts with MHC-1 proteins on the surface of the infected host cell, this allows the Tc cell to recignise the host cell and begin secreting cytotoxins (perforins and granzymes) in order to degrade the infected cell and cause apoptosis (controlled cell death)
Answer: ok ill help:
1. over population happens when too many babies are born and the place gets crowded
2. same thing happens is too many immigrants go to 1 place E.G UK