Answer:
Parasympathetic and Sympathetic branches of the autonomic nervous system
Answer:
Cambrian explosion
Explanation:
Cambrian explosion is a geological event that happened during the Cambrian age (541 million years ago). In this period, most of the animal phyla (including marine) appeared and their geological record is preserved in the form of fossils. The period lasted for 13-25 million years. Before this period, the organisms were very simple. They were mostly unicellular in nature and were living in the form of colonies.
The remaining three options are incorrect. They are tectonic events that reflect movement of continents in different geological times. None of them resulted in the diversification of (marine) animal phyla.
This is because of the location at which the Peyer's patches develop or are formed. These patches are excessive multiplication of lymphoid nodules within the lower portions of the small intestines.The occurrence of this abnormal cell division may prevent the linings of the intestines to perform its normal functions.
When plants undergo transpiration, they are returning water back to the atmosphere.
Bacterial cells are prokaryotic , and animal cells are eukaryotic. Bacteria is a very simple version of a cell. They basically contain a cytoplasm with floating DNA, a membrane and a cell wall. Animal cells don't have a cell wall but do have lots of other organelles.
