What is ecology?
the branch of biology that deals with the relations of organisms to one another and to their physical surroundings.
Explanation:
Although the light year is a
commonly used unit, astronomers
prefer a different unit called the parsec (pc). A parsec, equal to 3.26
light years, is defined as the distance at which 1 Astronomical Unit subtends an
angle of 1 second of arc (1/3600 of a degree) When we use the parsec for really
large distances, we often put a prefix in front of it - like kiloparsecs (kpc),
which are equal to 1000 parsecs - or Megaparsecs (Mpc), equal to a million
parsecs.
The Milky Way is about 1,000,000,000,000,000,000 km
(about 100,000 light years or about 30 kpc) across. The Sun does not lie near
the center of our Galaxy. It lies about 8 kpc from the center on what is known
as the Sagittarius arm of the Milky Way.
The conflict could be when he loses his son or when his wife wants him to use it, or all of the concqeneces
P waves can travel through liquid and solids and gases, while S waves only travel through solids. Scientists use this information to help them determine the structure of Earth.
S waves have a larger amplitude than P waves and cause the ground's surface to move both vertically and horizontally, making them more dangerous. Surface waves, which move slowly, are the last to arrive. P waves leave the earthquake first and go the furthest. Rock oscillates perpendicular to the direction of wave propagation in S or shear waves. In rock, S waves typically move at a pace of roughly 60% that of P waves, and they always come after the latter. Points of solid media move back and forth perpendicular to the wave's direction of propagation due to S waves, also known as shear or transverse waves. As the wave passes, the medium is sheared first in one direction and then in the opposite direction.
To learn more about P-waves and S-waves click the link below:
brainly.com/question/29334933
#SPJ4
