yes both plant and animal cells contain an endoplasmic reticulum(ER)
It is A) a polymer.
Because Polymer is a large molecule and made of smaller molucules and they are called monomers
-Hope this helps
Perch have paired pectoral and pelvic fins, and two dorsal fins, the first one spiny and the second soft. These two fins can be separate or joined.
Answer: [D]: "oceans" .
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Note: Among the answer choices given—{aquifers, glaciers, lakes, oceans}—oceans are the saltiest (VERY salty—requiring "desalination" in order to obtain potable water.
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