Answer:
air and water
Explanation:
because those two are the only ones in this list that dont eat, breathe, or reproduce
Answer:
The respiratory epithelium is a type of ciliated pseudostratified columnar epithelium.
Explanation:
The epithelium (a type of tissue) lines the blood vessels and inner-outer surfaces of organs. Their function includes protection, secretion, absorption, transport, etc. Based on the shape, they are classified as squamous, columnar, and cuboidal. Also, they can be simple epithelium (a single layer of cells) or stratified (layers of two or more cells).
Respiratory epithelium (airway epithelium) is a type of ciliated pseudostratified columnar epithelium. It is the epithelium that is found in the respiratory mucosa and lines most of the respiratory tract. It protects and moist the airways. It prevents infection by the self-cleaning mechanism of the airways (mucociliary clearance) and thus acts as a barrier to pathogens and foreign particles. It also secretes mucus and prevents tissue injury. The respiratory epithelium contains four types of cells-ciliated, goblet, club and airway basal cells. The arrangement of these multiple cell types as a single layer results in the non- alignment of their nuclei in the same plane. So the epithelium appears as layered or stratified. Hence the name pseudostratified or falsely layered.
The answer is B because theorys explain what happens and why it happens.
Answer:
Option C, Estuary
Explanation:
<em><u>An estuary is a geographical entity where the salty water of ocean mixes with fresh water of river. The resulting water is known as brackish water. The brackish water is not as salty as that of ocean and also the salinity level of water rise and fall regularly.</u></em>
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<em><u>Thus, an organism that is able to live in both salty water and fresh water environment can survive in an estuary.</u></em>
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<em><u>Hence, option C is correct</u></em>
