Answer:
The Paleozoic comes after the Neoproterozoic Era of the Proterozoic Eon and is followed by the Mesozoic Era. The Paleozoic was a time of dramatic geological, climatic, and evolutionary change. ... Arthropods, molluscs, fish, amphibians, synapsids and diapsids all evolved during the Paleozoic.
Enzyme linked to the secondary antibody
an undetermined measure of antigen is joined to a surface, and after that a particular counter acting agent is connected over the surface with the goal that it can tie to the antigen. This counter acting agent is connected to a catalyst, and in the last stage a substance is included that the compound can change over to some distinguishable flag, most normally a coloration change in a concoction substrate is seen.
Answer: C. 30 - 50 million years ago
Explanation:
Fossils found in layer Y formed 30 million years ago according to the graph above. Similarly, fossils found in layer Z formed 50 million years ago.
If a fossil (fern fossil) is found between layer Y and layer Z, it means that it formed between the years that the fossils in layers Y and Z formed which is 30 - 50 million years ago.
The first evidence of modern human traits, including increasing brain size and dependence on material culture shows up in Homo habilis. Even though they are species<span> of genus </span>Homo, they are not similar to people nowadays at all. <span>In </span>palaeoanthropology, these species were the first ones who left Africa and started to move and spread along Eurasia, which is one the main facts and characteristics of Homo habilis.
