Scarlet fever is caused by Streptococcus pyogenes, or rather the toxin secreted by the organism. This can cause meningitis and encephalitis. In the case of Helen Keller, permanent brain damage caused by the encephalitis affected her temporal lobe and occipital lobe which are responsible for processing hearing and visual information respectively.
Abiotic factors are non-living components of an ecosystem that influence its surroundings. Temperature, light, and water are examples of variables in a terrestrial environment.
I hope this helps, and if it's not too much trouble, may I have your brainliest?
Answer:
true is the correct answer