Prokaryotic cells lack a defined nucleus, but have a region in the cell, termed the nucleoid, in which a single chromosomal, circular, double-stranded DNA molecule is located.
The answer is b- the crocodile heart has three chambers.
The species that are mostly to be producers to be plants because they take in the light source aka the sun via photosynthesis. This takes up most of the energy in the ecosystem
A change in position over time is called a shift.
Answer: I think it's D
Explanation: A mineral is a chemical substance made up of one or more chemicals having a definite crystal structure. Rocks do not have a definite chemical composition whereas minerals do. Sometimes a rock may contain organic remains in it.
