Compare and contrast two of the plazas principales listed above. consider their location, size, how old they are, the buildings around them, and the events that take place there.

i believe it is "they are not used up by reactions" as the answer to your question, text me back if this is correct because i just learned this.

they fuse to form they have half as many chromosomes as a somatic cell of the same individual. b

brain development. a child's brain undergoes an amazing period of development from birth to three—producing more than a million neural connections each second. the development of the brain is influenced by many factors, including a child's relationships, experiences and environment.

explanation: