A. True. The ozone layer is very critical to our health.
Beryllium<span> (Be), </span>magnesium<span> (</span>Mg), calcium (Ca), strontium (Sr<span>), </span>barium<span>(Ba) and radium (Ra). Elements are grouped together because they share similar properties.
Hope i help</span>
Answer:
If a mineral is opaque, lustrous, malleable, and can conduct heat and electricity, it is a "Metal"
D) Metal
hydrogen (H2),and oxygen (O2),, that is the answer