The correct answer is D, white blood cells.
We know that red blood cells deliver nutrients and are not apart of the immune system; platelets are responsible for coagulation, which has nothing to do with the immune system, and plasma is a substance that, again, has nothing to do with immunity. White blood cells are the only things that fight disease (antibodies are white blood cells)!
I hope I helped!
(By nothing I meant very little to none).
<span>The embryonic period is the most important phase of development for organ formation. The embryonic period in humans begins at the moment of fertilization and continues until the end of the tenth week of gestation. Rapid growth and differentiation occurs during this period, which produces varied cell types.</span>
Answer:
https://en.m.wikipedia.org/wiki/Water_resources
can't upload the image though...
The answer is “glaciations”. In the late Carboniferous period there was a significant climate change all over the world that caused mass glaciations and it resulted in a huge number of species to become extinct
Capa de la atmosfera mas proxima al planeta tierra, climatologicos Donde se desrrolla La mayoria de los fenómenos. <span>a) ionosfera </span><span>b) estratosfera </span><span>c) exosfera </span><span>d) troposfera</span>
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