Answer:
C. At least five mass-extinction events have occurred during the last 500 million years.
Explanation:
- The history of mass extinct is related to the five mass extinctions that are caused over by the 350 million years n which many species have disappeared in there short geologic time.
- A massive extinction is caused in the Permian Triassic extinction event i.e about 250 mn years ago which on an estimate has killed 90% of the species.
- The Cretaceous–Paleogene extinction event that occurred over 66 million years ago is known to have wiped out the dinosaurs and many other species.
Answer:
super cala fragilistic expiladocious
Explanation:
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It is controlled by negative feedback loop.Let's say you have high glucose level in your blood,that will be registered and pancreas will produce more insulin to keep it in the normal range.Therefore by negative feedback loop it will regulate homeostasis
A little percent of it (around 9.5%) goes to recycling while a large percent goes to the landfill, ocean and beaches, where it will take years for the plastic to decompose and leak pollutants into the soil and water, <span>threatening the health and safety of marine life. There is a new recycling method where the plastics are shredded and mix with the other components to make hollow blocks for construction of structures.</span>
