Answer:
Each time a cell prepares to divide into 2 new cells, it must make a new copy of the DNA in its chromosomes. This process is not perfect, and errors can occur that may affect genes within the DNA. Cancers can be caused by DNA mutations (changes) that turn on oncogenes or turn off tumor suppressor genes.
Explanation:
1) Those trees that grow in open clusters or in pure associations.
2)Those plants that grow on ate attached in some way to other plants for physical support.
B, the lowest layer is a dinosaur fossil, therefore the mammal fossil was after
Hello there
the answer is .Suction with a 12 Fr catheter.
True breeding is when nature had to do with the breeding and Mendel didn't interfere with the breeding of the plants to get a certain offspring
