Which heavenly body does the presentation discuss in each version of Carl Sagan's Pale Blue Dot? the Sun the Universe the Earth the Moon

the Earth

Explanation:

The astronomer Carl Sagan speaks of the Earth in the Pale Blue Dot. This is perhaps given away by the title which describes the dot as blue which is the same colour as Earth.

Carl Sagan speaks of how the Earth is home to humans who are diverse and believe in many different things such that we are a danger to ourselves. He mentions that it is the only planet that can harbor life at that point and so humans should treasure it and take care of it.

same test same problem

either a donut or a sphere or a pancake or a flat sphere. it depends on where the vertical line is.

if the line goes through the center of the circle and is perpendicular to a diameter containing the center, then you get a flat circle.

if the line and the diameter of a the circle meet in the center of the diameter and at an angle, you get a pancake.

if the line is on the circumference of the circle and is at right angles   to the circle you get a ring.

if the line contains the diameter, you get a sphere.

the the line is parallel to the diameter and touches the circumference, you get a donut.