Scientists use sonar machines in order to map the contour of the ocean floor. the data from the sonar machines make a model of the ocean floor. what information can be obtained from this model? a. what sort of organisms live near the ocean floor b. what sort of landforms are found on the ocean floor c. how old the ocean's crust is d. what temperature the water is near the ocean floor

Option (B)

Explanation:

Sonar stands for Sound Navigation and Ranging. It is a machine that is technically designed to understand the bathymetry and the topography of the ocean floor. It helps in determining what kind of landforms exist on the ocean floor.

Here, in this machine, sound waves are used that propagates through the ocean water. This waves then strikes the ocean floor and are reflected back. This reflected sound takes various time at different places, to be detected by the detector. This difference in time helps them to map the surface of the ocean floor.

Thus, the correct answer is option (B).

scattering of light by tiny particles in air to produce the colors we see on sky, is dependent on the following factors:

(i) wavelength of light

(ii) size of the scattering particle  

(iii) distance traveled by light through the atmosphere.

according to rayleigh's law of scattering, the amount of scattering is inversely proportional to the fourth power of its wavelength. shorter the wavelength, greater is its scattering. hence violet/blue light is scattered more than red.

sun's light is a composite light ( visible light) with wavelengths in the range 400 nm (violet) to 700 nm (red). as sunlight passes through our atmosphere, the molecules of air scatter light according to their wavelengths. during sunrise and sunset, the sun's position is below the horizon. hence light from the sun travels a greater distance in the atmosphere when compared to its position a noon.

as sunlight enters the earth's atmosphere, blue light is scattered away and at the end of its journey in the sky, only red and orange wavelengths remain in the beam.

hence at sunrise and sunset, the sky appears reddish orange.

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).