The following atoms all undergo alpha particle emission. Write the complete nuclear equation. → +

→ +

→ +

→ +

1:210 Po 84
2:238 U 92
3:238 Th 90
4:222 Rn 86

i believe you are right for all except the 3rd ( look at sqdancefan his answer is much better)

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

idk what the question is about