Animal dander would be the answer you're looking for.
Hope this helps :)
The correct answer is microglia.
<span>Microglia is glial cells found in the central nervous system with the protective role. Because they are the resident macrophage cells, they act as the first and main form of active immune defense. Microglia is constantly cleaning the CNS for plaques, damaged or unnecessary neurons, and infectious agents, like viruses or other microorganisms.</span>
Answer:
He's male so he received an 'x' chromosome from his mother and a 'y' chromosome from his father
Answer:
No
Explanation: its related to climate
