A dolphin perceives its environment by the sense of__________?
A dolphin perceives its environment by the sense of__________?
A. Sight
B. Sound
C. Both of these
D. None of these
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Place directly above focus on Earth’s surface is known as _________?
Place directly above focus on Earth’s surface is known as _________?A. Strike
B. Comma
C. Epicenter
D. OriginThe earth’s atmosphere is divided into layers based on the vertical profile of __________?
The earth’s atmosphere is divided into layers based on the vertical profile of __________?
A. Air pressure
B. Air temperature
C. Air density
D. Wind speedThe scientific study of teeth is called ____________?
The scientific study of teeth is called ____________?
A. Odontology
B. Ornithology
C. Orthoepy
D. PedagogyRetinol is the chemical name of?
Retinol is the chemical name of?A. Vitamin A
B. Vitamin B
C. Vitamin C
D. Vitamin KIn 2013, Planck measured the age of the universe at ___________?
In 2013, Planck measured the age of the universe at ___________?A. 13.82 billion years
B. 4.53 billion years
C. 4.6 billion years
D. 4.53 billion yearsThe ________ system is the closest star system to our sun.?
The ________ system is the closest star system to our sun.?A. Promixa Centauri
B. Alpha Centauri
C. Red proxima Centauri
D. None of theseThe Alpha Centauri system is the closest star system to our sun. On our sky’s dome, we see this multiple system as a single star and the third-brightest star visible from Earth. Alpha Centauri is part of a double, or triple, star system. The two main components are Alpha Centauri A and Alpha Centauri B.