A at right angles
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The movement produces oscillating electric and magnetic fields, which travel at right angles to each other in a bundle of light energy called a photon. ... Magnetic and electric fields of an electromagnetic wave are perpendicular to each other and to the direction of the wave.
The answer is b, structure, because it is what the organism is made up of.
Answer:
Cell theory
Explanation:
Robert Hooke modified the compound microscope and observed the microscopic organisms and the rectangular blocks of cork cells. He named the blocks called cells.
Similarly, Anton van Leeuwenhoek observed the living fungus growing on the bread with microscope and observed that these organisms are composed of the same cells.
Later the Schleiden and Schwann observed the plant tissue and animal tissue independently and found that these are made of the cells.
This lead to the formation of the cell theory that all living organisms are made of cells.
Thus, cell theory is the correct answer.
The half-life is then determined from the fundamental definition of activity as the product of the radionuclide decay constant, λ, and the number of radioactive atoms present, N. One solves for λ and gets the half-life from the relationship λ = ln2/T
