Answer:
its when certain organisms are better suited for certain enviornments or they have genes that allow them to live in a enviornment without struggle
Explanation:
The fossil record indicates that the earliest hominids most likely originated in "Africa," since this is the location from which humans eventually migrated to other locations.
Answer:
amoeba
Explanation:
unicellular are the organism which have single cell.
Answer: Nucleotides
Explanation: DNA is made up of molecules called nucleotides. Each nucleotide contains a phosphate group, a sugar group and a nitrogen base. The four types of nitrogen bases are adenine (A), thymine (T), guanine (G) and cytosine (C).