A contains specific instructions for making proteins A- CHROMOSOMES
B- GENE
C- MOLECULES
D- RIBOSOMES

the major pests we deal with are insects, weeds and fungal diseases. a pesticide is a product, whether organic or chemical, used to kill the target pest. there are other techniques gardeners should use that can prevent the severe infestations that make the use of pesticides necessary

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer

oxygen, selenium, tellurium, and polonium.

they're all from the same group as sulfur (group 16).

i think it's c. if you look search electronic symbol on google and then click on wiki it shows you a