My best guess is allergies
Robert Hooke used a compound microscope to look at thin slices of cork.
The two most important environmental factors are biotic and abiotic factors affecting animals.
<h3>what are the difference between abiotic and biotic factor ?</h3>
Biotic factors are living beings of an ecosystem where as abiotic factors are non-living like physical and chemical agents in the ecosystem.
Biotic factor dependent on abiotic factor, but abiotic factor are independent.
Biotic factor affects the biome, individual species, population biosphere,, where as abiotic factor affects species, their population, community, ecosystem, and biosphere.
Biotic factor are plants, animals, bacteria, algae where as abiotic factors are soil, topography, climate of an ecosystem.
Biotic factor is subjective but abiotic factor is objective.
Learn more about Biotic factor, here:
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Chloroplasts = Photosynthesis
Mitochondria = Cellular Respiration
