Meteorites are composed of the original material Form which earth was formed. Their compositions range from metallic meteorites made of iron and nickel to stony meteorites composed of dense rock like peridotite.
The correct answer is B.chloroplasts.
Chloroplasts are plant’s organelles so they cannot be found in a cell from fingernail. The function of chloroplasts is to convert light energy of the Sun into glucose that can be used by cells and this is possible thanks to chlorophyll found in chloroplast . The entire process is called photosynthesis.
Sometimes, heavy weight on soft soil can result in collapse of ground, resulting in asinkhole<span>. </span>Sinkholes<span> can also </span>form<span> when the land surface is changed. Areas that have a bedrock made of limestone, salt deposits or carbonate rock are most susceptible to erosion and the </span>formation<span> of such holes.</span>
Enzymes.
because enzymes are a substance produced by a living organism that acts as a catalyst to bring about specific biochemical reaction.
People have grown completely immune to smallpox, meaning that the vaccine has done it's job and is no longer needed.
