Geologists can 'read' rock layers using relative and absolute dating techniques. ... Relative dating arranges geological events, and the rocks they leave behind, in a sequence. The method of reading the order is called stratigraphy (the rock layers are called strata).
The process that would stop if a chemical that interrupts cell division was added to a culture of human liver tissue is mitosis.
This is because cell division is mitosis and if the chemical stops cell division that means it stops mitosis.
Acid rain is man made and there is more types of acid. Normal rainwater is dissolving Carbon Dioxide as it falls through the sky. When a volcano erupts actually slightly acidic with a pH of just over 6. This is due to the rain it releases gases such as Sulphur Dioxide into the air which makes the rainwater more acidic with a pH of about 4. Air pollution caused by man also contributes <span>to the acid rain.</span>
Answer:
At a given chiasma, an exchange of genetic material can occur between both chromatids, what is called a chromosomal crossover, but this is much more frequent during meiosis than mitosis. In meiosis, absence of a chiasma generally results in improper chromosomal segregation and aneuploidy.
Explanation:
Answer:
Peyer's patches: b) site of B cell maturation
Explanation:
B lymphocytes are produced in the bone marrow and get mature in the bone marrow only so the site of B cell maturation is bone marrow, not Peyer's patches. B cells produce antibodies that help in destroying microbes.
Peyer's patches are lymphatic tissue mass which is found especially in the mucosa and submucosa of the ileum. This lymphoid organ has a large number of B lymphocytes which monitors the intestinal bacteria and prevents the growth of pathogenic bacteria in the intestine.
