It is sensors :) i hope this helped you :)
Umm do u mean cytoplasm? I'm not sure
Crossover occurs when two chromosomes, normally two homologous instances of the same chromosome, break and then reconnect but to the different end piece. If they break at the same place or locus in the sequence of base pairs, the result is an exchange of genes, called genetic recombination.
Decaying matter is called compost