All are true about cell theory except cells are structural and functional units of life
B All living things are composed of one or more cells
C most cells in humans are undifferentiated
D cells come from pre-existing cells

D: Cells come from pre-existing cells.

This cannot be true as some cells die, meaning they cannot come from pre-existing cells.

In regards to B and C most are undiffereniated and any living thing has at least one cell in them.

burning of wood and coal

explanation:

the panel also concluded there's a better than 95 percent probability that human-produced greenhouse gases such as carbon dioxide, methane and nitrous oxide have caused much of the observed increase in earth's temperatures over the past 50 years.

the organisms are not adapted to live in some communities or habitats.