Answer:
The frequency is higher in case of echolocation sounds produced by Bottlenose dolphins. It falls in the range 40,000 Hz to 130,000 Hz, while the calls made by blue whales lies in the range of 30 Hz to 8,000 Hz.
However, the blue whale calls last a lot longer than the echolocation sounds made by the dolphins. A typical blue whale call is between 10 to 30 seconds long, while the dolphin's click is only 50 to 128 microseconds long.
Hope that answers the question, have a great day!
Answer:
The correct answer is option A. Fish ladders
Explanation:
Fish ladders are a stair-like structure that gives the passage to the migrating fish to get around a dam to their destinations. As dams are an obstruction to fishes like salmon that migrate in the river upstream to breed, fish ladders have been created to allow the fish to get to their destinations by providing a passage around the dam.
Thus, the correct answer is option A. Fish ladder.
Epilepsy is treated successfully with medication in a
majority of patients. However, the dosages needed to completely eliminate
seizures may cause intolerable side effects. Neurosurgery is indicated only for
patients in whom medication therapy is unsuccessful. Our goal is to reduce your
seizures to an extent that helps you live a normal life."
Four covalent bonds. carbon-carbon, carbon-hydrogen, carbon-oxygen, and oxygen-hydrogen
Answer:
B. A group that is treated the same as other groups except for the variable being tested.
