Which of the following groups of elements are in the main group?
O
A. Nonmetals
O
B. Transition elements
O
C. Alkali metals
O D. Halogens

this is a good question! i'll do some research and come back when i have the answer!

condensation. good luck!

essentially, one bacterial cell splits into two daugurer cells. bacterial offspring don't need or get care from their parents because they are in a sense their own parents. that said, some bacteria can and do depend on other bacteria especially in harsh environments such as bacterial microfilms in hot water tanks.