Outgassing<span> (sometimes called </span>offgassing<span>, particularly when in reference to </span>indoor air quality<span>) is the release of a </span>gas<span> that was dissolved, trapped, </span>frozen<span> or </span>absorbed<span> in some material. </span><span>Outgassing can include </span>sublimation<span> and </span>evaporation<span> which are </span>phase transitions<span> of a substance into a gas, as well as </span>desorption<span>, seepage from cracks or internal volumes and gaseous products of slow </span>chemical reactions<span>. </span>Boiling<span> is generally thought of as a separate phenomenon from outgassing because it consists of a phase transition of a liquid into a vapor made of the same substance.</span>
If it were single celled, then it would need some form of protection so the answer would be C. an outer covering
The number of chromosomes is reduced in half from 46 to 23, the process that causes that effect is the meiosis process, because they have only half the total chromosomes in a somatic cell, they are termed haploid.
The answer is :Phototrophs
