Answer:
Chemical evolution is the formation of complex organic molecules from simpler inorganic molecules through chemical reactions in the oceans during the early history of the Earth.
It the first step in the development of life on this planet
HOPE IT HELPS!!!!
Chemical factors: This is due to internal stimuli. Changes in the blood such as decrease in O2, increase in CO2 and decrease in PH cause impulse in the carotid artery which stimulates the respiratory centers in the medulla and cause breathing.
Mechanical factors: also called external stimuli. Compression of the fetal chest during delivery forces small amount of lung fluid out of the lungs. This increase in pressure in the chest draws air into the lungs.
Answer: A Eukaryote is: an organism consisting of a cell or cells in which the genetic material is DNA in the form of chromosomes contained within a distinct nucleus. Eukaryotes include all living organisms other than the eubacteria and archaebacteria.
What is metazoans it it: Metazoa are multicellular organisms composed of eukaryotic cells that lack chloroplasts. The cells that comprise a metazoan all have the same DNA but are specialized as to function and formed into organs. Metazoa are commonly known as multicellular animals.
Explanation: Hope this helps good luck
A-U-G-G-C-A
G matches w/ C
T matches w/ A but when transcribing to mRNA instead of T its U
