The answer is 'Cambrian' explosion. This took place approximately 541 million years ago. 'Explosion' refers to the evolution of a large range of new major animal phyla. Scientists know this by the large number of diverse fossils from this period. Prior to this period, organisms were single-celled, but over the Cambrian Explosion, lasting about 80 million years, life forms diversified rapidly to resemble the life forms existing today.
We should suction the airway.
This is because the thick mucus and secretions should be removed from the trachea.
Answer:
'Dosage' of a chromosome (or a gene) refers to its genomic ... The effect of the dosage compensation complex on the X ...
Four; the upper atmosphere, the atmosphere, the mantle, and the core.
The Law of Conservation of mass is important because then when performing a chemical reaction scientists can determine about the amount of substance that will be produced.
