The biosphere is everything. the whole planet. so all of the above is right
Answer:
sensory neurons
Explanation:
Sensory neurons carry nerve impulses from sense organs and internal organs to the central nervous system.
1. Reduces the chromosome number from diploid to haploid
2. Ensures that each of the 4 gametes has a complete set of chromosomes
Well there's Water, Earth, Fire, and Air. Not quite sure how this would be a school question. But here it is.