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.
Systemic circulation is the circulation of blood through<span> the arteries, capillaries, and veins of the general system.
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Well honestly, when someone turns the light in, your bodies automatic response is to close and cover your eyes.
Rabbit. It's the only herbivore in this chain.
Answer:
B. Protein is composed of DNA which is produced in the cell
Explanation:
