B) Circulatory.
The Circulatory system spreads the blood all around the heart. It makes sure blood is able to reach every part in the body.
Answer:
Prokaryotes can be multicellular.
Explanation:
At the most basic level of classification, cells can be either prokaryotic or eukaryotic.
Prokaryotic cells are only bacteria or archaea, eukaryotic cells are fungi, protists, plants and animals.
The key difference is that eukaryotes have a true nucleus and membrane-bound organelles. Prokaryotes lack a true nucleus and membrane-bound organelles. Prokaryotes are simple and are only ever unicellular.
Answer:
True
Explanation:
Nitrogen is a fundamental component of both inorganic and organic compounds, where it is the main constituent of biomolecules such as nucleic acids (DNA, RNA) and proteins. The nitrogen cycle refers to the biogeochemical processes by which nitrogen circulates between the components of an ecosystem, i.e., between organisms (like plants and decomposers), and non-living things (i.e., soil, water, air). This cycle consists of several processes which include, among others, nitrogen fixation (i.e., the process by which nitrogen in the atmosphere is converted into ammonia), nitrification (i.e., the oxidation of ammonia is oxidized into nitrite and subsequent transformation of nitrites into nitrates), denitrification (where nitrate is reduced), anaerobic ammonia oxidation and putrefaction.
<span>In a longitudinal wave, particle displacement is parallel to the direction of wave motion.!
Just remember Looong-itudinal , long = like a spring in a spring its compressions and the wave travels "thru,on the spring" so its parallel to the source/wavemotion.
the other to note is the last selection , perpendicular is transverse wave. So these 2 are the most common types that will appear :D
_Brainliest if i helped! </span>
- DNA and RNA are made up of monomers called nucleotides. - DNA and RNA both have 3 nitrogenous bases: Adenine, Cytosine and Guanine. - DNA and RNA both have a phosphate groups in their nucleotides. Sometimes called phosphoric acid.Feb 18, 2009