Development is where the growth of the embryo occurs. After fertilization and implantation, the growth of the embryo occurs once it gets to the uterus. This is the part where the procedure where the embryo turns into a living being over time - depending on the animal that has the said embryo.
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The toxic sludge covers the animals completely, and then they suffercate and dye, I don't know how else to say that
In my opinion mixed layers would be the best choice
Carbo dioxide, water and sun's energy comes fron the outside.... energy and Oxygen molecule are produced
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The eukaryotic cell nucleus. Visible in this diagram are the ribosome-studded double membranes of the nuclear envelope, the DNA (complexed as chromatin), and the nucleolus. Within the cell nucleus is a viscous liquid called nucleoplasm, similar to the cytoplasm found outside the nucleus.