Answer: Los distintos órganos linfoides están interconectados por vasos sanguíneos y vasos linfáticos, de modo que se constituye un sistema unitario, entrelazado y bien comunicado. Estos vasos transportan células del sistema inmune, de las cuales el tipo central es el linfocito.
Explanation:
Brainly
Sympathetic nervous system
These physical reactions are triggered by the sympathetic nervous system.
The sympathetic nervous system is part of the autonomic nervous system that triggers the fight or flight response. The sympathetic nervous system functions through various interconnected neurons in the body and it is responsible for preparing the body for physical and mental activity. The sympathetic nervous system causes the heart to beat faster and stronger, opens the airways for easy breathe, and prevents digestion.
Answer:
1. Mutation
2. Gene flow
Explanation:
New traits can be made when there is an error in gene replication, called a mutation. The mutation will give the offspring different genes that might be harmful or beneficial to the organism.
Gene flow happens when any organisms from other places immigrate into the population. If these organisms can reproduce with the local organisms, it will introduce new traits that was not originally come from the population.
