Which of the following tools is most useful for tightening a small mechanical fastener?
OPTIONS:
- chisel
- pliers
- sander
- saw

pliers


Which of the following is formed immediately after fertilization?
OPTIONS:
- egg
- sperm
- zygote
- embryo

zygote


Because sulfur cannot be decomposed by simple chemical methods into two or more different substances, it is classified as
OPTIONS:
- an element.
- a compound.
- a mixture.
- a molecule.


an element.