Nematodes have a pseudocoelom and are the simplest animals that have a complete digestive tract.
Nematodes also known as roundworms are animals well adapted to variety of environments, meaning that are ubiquitous. Nematodes are small, bilaterally symmetric with ornamented ring body structures. Their body is covered with cuticle that works with the muscles beneath it to create a hydroskeleton. There are free-living species and parasitic species of Nematoda.
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Earth's amazing gaseous atmosphere is responsible for making life possible on this, the third planet from the Sun. Our atmosphere contains water vapor which helps to moderate our daily temperatures. Our atmosphere contains 21% oxygen, which is necessary for us to breathe, 78% nitrogen,
The phrase anatomical position is defined for human anatomy. It is body s<span>tanding upright, facing forward, arms at sides, palms forward, thumbs outward and toes forward.</span>
To retain a better sense of balance or aid in reaching limbs if a tree living animal. Also, too protect from predator attacks from behind.
Binomial nomenclature<span> is the formal </span>naming system<span> for living things that all </span>scientists use<span>. It gives every species a two-part scientific name. For example, a ladybug found in the United States goes by the fancy name of Harmonia axyridis. The first part of a scientific name, like Harmonia, is called the genus.</span>
