Atransparent material but is an opaque material

Glass is a transparent material but Wood is an opaque material.

This is because transparent materials let all light through them but opaque materials let no light through them.

the diploid number of chromosomes is sometimes represented by the symbol 2n. for the fruit fly, the diploid number is 8, which can be written as 2n = 8, where n represents twice the number of chromosomes in a sperm or egg cell.

the correct answer, according to e2020, is the second choice there is an occluded front in region a and a cold front in region b.