The way animals or creatures change and adapt over time
Answer:
Additionally, a series of GM crops have modified to express traits like an efficient use of soil nitrogen, which directly increases agricultural yield while reducing the use of fertilizers, and the new generation of diverse drought-tolerant, heat-tolerant and salinity-tolerant crops, which will increase the final yield
Explanation:
The immune system and the nervous system maintain extensive communication, including 'hardwiring' of sympathetic and parasympathetic nerves to lymphoid organs. Neurotransmitters such as acetylcholine, norepinephrine, vasoactive intestinal peptide, substance P and histamine modulate immune activity.
The youngest would be the ones at the top and the oldest would be at the bottom. the oldest is B and the ones around it, as they get bigger get younger. hope this helps :)
It helps make and fix body tissue.