Aplants __are mainly composed of cells that are specialized for light penetration and the regulation of gas exchange

The correct answer is leaves. The leaves are the part of the plants that are mainly composed of cells that are specialized for the sunlight penetration and the regulation of the gas exchange. The leaf is located in the external part of the plant which will be the one who is receiving the sunlight and as well as the carbon dioxide and the release of the oxygen.

Because the earth is not round ,but it may seem round when viewed from ,our planet but true some points earth is not round was an oblate spheroid -a square that it squashed as globe however is not even a perfect oblate spheroid.in fact isaac newton's first proposed that earth was not perfectly round but it was an oblate spheroid instead.that mean a square that is squashed as its poles and swollen at the