An astronomer wrote down the following observations regarding an object she recently discovered. which piece of evidence disqualifies this object from being a planet? a]the object orbits a white dwarf star. b]the object also appears to have six moons of its own. c] current images show that the object is rectangular in shape, and its mass is about one-fourth that of earth’s. d]it has a slow orbital period, orbiting its star every 400 days.

C] Current images show that the object is rectangular in shape, and its mass is about one-fourth that of Earth’s.

Explanation:

For an object to qualify as planet, it must be round in shape and revolve about a star in a fixed orbit. The planet may or may not have moons. But, it should be biggest in its neighborhood.

From the observations made by the astronomer, The object is rectangular in shape. This disqualifies it from being a planet

the dna molecules have a negative charge because of the phosphate groups in their sugar-phosphate backbone, so they start moving through the matrix of the gel towards the positive pole. power is turned on and dna fragments migrate through gel (towards the positive electrode).

explanation: