which word identifies this part of a eukaryotic cell?

vesicles

cytoplasm

chromatin

nucleolus

The word "Cytoplasm"  identifies the part of a eukaryotic cell'

Explanation:

Cytoplasm is a thick and a dense solution filled in each cell which is enclosed by the cell membrane. It is composed of proteins, water and salts. In case of the eukaryotic cell, cytoplasm has the materials inside and outside the nucleus.

The cytoplasm has mitochondria, nucleus, and endoplasmic reticulum in it. A small portion of cytoplasm  lacks organelles in it, which is called as cytosol. A protein scaffolds framework, provides structure called cytoskeleton.  

the element that provides strength to the exoskeletons of clams and oysters is phosphorus.

this is so because calcium carbonate is the main component in the shells. calcium carbonate is strengthened by phosphorus.

explanation:

answer; i believe the answer is hydraulic action;