Compare the three main regions of africa (northern, western, central, eastern, and southern africa)

Name the plastid and pigment likely to be found in the cells of (a) petals of sunflower (b) ripe tomato.

Which best explains why there are 64 possible codons in the genetic code and only 20 amino acids that make protiens of living organisms on earth

Using meiosis, the sporophyte produces spores that are .