Data about stars in our universe is obtained by mean of telescopes.
<h3>What is a star?</h3>
A star is a large luminous astronomical body which produces light and heat energy as well as radiation.
There are billions of stars in the universe organized into galaxies.
The Sun is the star of our solar system.
In the video, a mysterious star was observed which is 50 percent bigger and 1,000 degrees hotter than the Sun.
By mean of telescopes, it was observed that the dimming seen in the diet was dues to dust particles.
Learn more about stars at: brainly.com/question/25880445
ANSWER:
About 11 percent of the Earth's surface is used to grow crops...
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They have different colored eyes because their parents do. Their parents could also have mixed genetics. This means that their parents could have dominant AND recessive traits (heterozygous), leading to one of the puppies to having full recessive traits.
Horizontal or transverse or axial cut is if you cutting the object with the horizontal plane. The cut would look like ( -- ).
Vertical or longitudinal is cutting in the vertical plane. The cut would look like ( | )
There is also coronal cuts which were a cut with direction from front to back.
Th memory cells differ from the effector cells in that the memory cells live longer. Two types of cells are produced by the clonal selection, these are the effector cells and the memory cells. Effector cells are relatively short lived activated cells that defend the body in an immune response. Effector B cells are called plasma cells and secrete antibodies, and activated T cells include cytotoxic T cells and helper T cells, which carry out cell-mediated responses. The production of effector cells in response first time exposure to an antigen is called the primary immune response. The memory produced at this time and only become active in case of a re-exposure to the same antigen that stimulated their formation.