I’m pretty sure the answer is 4.
Evaporites are rocks formed by the evaporation of water. They are sedimentary rocks. Common examples of evaporites include gypsum, anhydrite, and halite (common salt.) I hope this helps! :)
Answer:
C
Explanation:
They in fact were mosses and mosses by definition dont have seeds or vascular and Charophycean type plants dont live in water
Answer:
Well preserved fossils of ancient animals.
Explanation:
Prehistoric remnants or fossils of certain animals, such as crocs, primates and bats, have also been discovered surprisingly well protected in the underwater galleries of the Dominican Republic. These caves are found within the Cotubanama Nature Reserve, and that the last four years have been a disappointment to wildlife conservation and animal care policies.
Answer: CLONAL SELECTION OF B CELLS.
Explanation: B cells are also known as B lymphocytes( a type of white blood cell),when antigens binds to receptors in the cell,B lymphocytes in the body recognizes this antigen and selection is made from the pre-existing pool of different antigens,each with it's unique specification,this B lymphocytes undergo reproduction and from there a clonal population of cells are formed which kills/get rid of the antigen.
These antigens are eliminated by either the plasma cells that form immediately from the B lymphocytes secreting antibodies that fight the antigen,but in AIDS (people living with AIDS),the B lymphocytes that fight the antigen are known as memory B cells which are long lived from the stage of proliferation and are left to fight antigens in later life by forming plasma cells.so even if the helper T cells in AIDS patients are low,the memory B cells are stimulated to form plasma cells,activate antibodies to fight off life threatening infections.
answer: The African Plate is splitting apart to form two separate plates.
