a dihybrid cross of plants having the heterozygous phenotypes, short plants with spherical seeds and y'all plants with dented seed, yields only plants of intermediate height with spherical seeds. this is an example of what pattern of inheritance

the electromagnetic spectrum includes, from longest wavelength to shortest: radio waves, microwaves, infrared, optical, ultraviolet, x-rays, and gamma-rays.

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds

i think its both a and b